consume /kənˈsuːm/ (verb) to use something, especially fuel, energy or time Example: The printer consumes more toner than the downstairs printer
replace /rɪˈpleɪs/ (verb) to be used instead of somebody/something else; to do something instead of somebody/something else Example: I've replaced the hard drive that was malfunctioning
source /sɔːrs/ (noun) a place, person or thing that you get something from Example: I can't tell you the source of this information
resource /ˈriːsɔːrs/ (noun) a supply of something that a country, an organization or a person has and can use, especially to increase their wealth Example: The company's most valuable resource was its staff
waste /weɪst/ (noun) the act of using something in a careless or unnecessary way, causing it to be lost or destroyed Example: Without a leader, the group members wasted time and energy trying to organize themselves
decade /ˈdekeɪd/ (noun) a period of ten years, especially a continuous period, such as 1910–1919 or 2000–2009 Example: Each decade seems to have its own fad products
category /ˈkætəɡɔːri/ (noun) a group of people or things with particular features in common Example: Jazz is one of many categories of music
regularly /ˈreɡjələrli/ (adverb) at regular intervals or times Example: She brushes regularly after every meal
separate /ˈseprət/ (adjective) forming a unit by itself; not joined to something else Example: I try to keep meat separate from other food in the fridge.
scheme /skiːm/ (noun) a plan or system for doing or organizing something Example: How is your learning scheme?
ultimately /ˈʌltɪmətli/ (adverb) in the end; finally Example: Ultimately, all the colonies will become independent.
panel /ˈpænl/ (noun) a square or rectangular piece of wood, glass or metal that forms part of a larger surface such as a door or wall Example: Solar panels are installed on the roof of the house.
recent /ˈriːsnt/ (adjective) that happened or began only a short time ago Example: Recent research has shown that the earth is seriously polluted.
model /ˈmɑːdl/ (noun) a copy of something, usually smaller than the original object Example: We would like to have a look at model 321A.
faucet /ˈfɔːsɪt/ (noun) a device that controls the flow of water from a pipe Example: She always turns off the faucet after washing clothes.
pipe /paɪp/ (noun) a tube through which liquids and gases can flow Example: The pipes in my house are broken, so water covers the floor.
quarter /ˈkwɔːrtər/ (noun) one of four equal parts of something Example: It's a quarter past five.
save /seɪv/ (verb) to keep somebody/something safe from death, harm, loss, etc. Example: We need to save power.
install /ɪnˈstɔːl/ (verb) to fix equipment or furniture into position so that it can be used Example: A fire extinguisher is being installed in this house.
household /ˈhaʊshəʊld/ (noun) all the people living together in a house or flat Example: My household bill comes to twenty dollars.
effectively /ɪˈfektɪvli/ (adverb) in a way that produces the intended result or a successful result Example: Last month, I talked to some students about how to learn effectively.
receive /rɪˈsiːv/ (verb) to get or accept something that is sent or given to you Example: She received her prize from the manager
ordinary /ˈɔːrdneri/ (adjective) not unusual or different in any way Example: They are ordinary people like you and me.
label /ˈleɪbl/ (noun) a piece of paper, etc. that is attached to something and that gives information about it Example: He'll only wear clothes with a designer label.
crack /kræk/ (verb) to break without dividing into separate parts; to break something in this way Example: There is a crack in his car after the accident.
suggest /səˈdʒest/ (verb) to put forward an idea or a plan for other people to think about Example: I suggest being on time.
nuclear /ˈnuːkliər/ (adjective) using, producing or resulting from nuclear energy Example: People are against the nuclear test in this area.
bill /bɪl/ (noun) a document that shows how much you owe somebody for goods or services Example: The bill for their meal came to £17.
innovation /ˌɪnəˈveɪʃn/ (noun) the introduction of new things, ideas or ways of doing something Example: Great innovations have been made by those famous composers.
infrastructure /ˈɪnfrəstrʌktʃər/ (noun) the basic systems and services that are necessary for a country or an organization to run smoothly, for example buildings, transport and water and power supplies Example: It is necessary to improve the infrastructure for better traffic systems.
conserve /kənˈsɜːrv/ (verb) to protect something and prevent it from being changed or destroyed Example: People in this city are trying to conserve the historic buildings.
refrigerator /rɪˈfrɪdʒəreɪtər/ (noun) a piece of electrical equipment in which food is kept cold so that it stays fresh Example: Put the vegetables in the refrigerator.
appliance /əˈplaɪəns/ (noun) a machine that is designed to do a particular thing in the home, such as preparing food, heating or cleaning Example: He just bought a new set of domestic appliances.
chopstick /ˈtʃɑːpstɪk/ (noun) either of a pair of thin sticks that are used for eating with, especially in East Asian countries Example: Vietnamese people usually use chopsticks in daily meals.
bulb /bʌlb/ (noun) the glass part that fits into an electric lamp, etc. to give light when it is switched on Example: The bulb in the kitchen needs to be changed.
chore /tʃɔːr/ (noun) a task that you do regularly Example: You should help elderly people with their chores.
account for /əˈkaʊnt fɔː/ (phrasal verb) to be the explanation or cause of something Example: Clothes account for one third of her expenses.
car pool /ˈkɑːr puːl/ (noun) a group of cars owned by a company or an organization, that its staff can use Example: You should organize a car pool to reduce traffic jams.
conservation /ˌkɑːnsərˈveɪʃn/ (noun) the protection of the natural environment Example: This kind of bird is protected by conservation plans.
consumption /kənˈsʌmpʃn/ (noun) the act of using energy, food or materials; the amount used Example: Industrialized countries should reduce their energy consumption.
consumer /kənˈsuːmər/ (noun) a person who buys goods or uses services Example: It is necessary to raise consumers' awareness.
drip /drɪp/ (verb) to fall in small drops Example: My house was full of water because the faucet had been dripping for a long time.
efficiency /ɪˈfɪʃnsi/ (noun) the quality of doing something well with no waste of time or money Example: The reforms will lead to cost efficiency and savings.
energy-saving /ˈenədʒi ˈseɪvɪŋ/ (adjective) Example: We should use energy-saving household appliances.
hobby /ˈhɑːbi/ (noun) an activity that you do for pleasure when you are not working Example: What are your hobbies?
luxury /ˈlʌkʃəri/ (noun) the fact of enjoying special and expensive things, particularly food and drink, clothes and places Example: We can't afford many luxuries.
plumber /ˈplʌmər/ (noun) a person whose job is to fit and repair things such as water pipes, toilets, etc. Example: We had to call a plumber to repair the pipes.
profitable /ˈprɑːfɪtəbl/ (adjective) that makes or is likely to make money Example: Using solar energy in manufacturing is profitable for all of us.
shortage /ˈʃɔːrtɪdʒ/ (noun) a situation when there is not enough of the people or things that are needed Example: There is a shortage of water in this area.
solar energy /ˌsəʊlər ˈenərdʒi/ (noun) energy given out by the sun in the form of heat and light Example: Many buildings in some countries are heated by solar energy.