Adolescence /ˌæd

gas /gæs/ noun plural gases or gasses LIQUID FUEL
5. [ U ] US for petrol
I'll stop and get some gas - we're running low. a gas tank/pump
6. the gas
[ S ] US the part of a car which you push with your foot to make it go faster
Step on the gas (= drive faster) !
greenhouse gas noun [ C ]
a gas which causes the greenhouse effect, especially carbon dioxide
hybrid /ˈhaɪ.brɪd/ noun [ C ]
1. a plant or animal that has been produced from two different types of plant or animal, especially to get better characteristics, or anything that is a mixture of two very different things
The garden strawberry is a large-fruited hybrid.
2. ( also hybrid car ) a vehicle with an engine that uses both petrol and another type of energy, usually electricity
hydrogen /ˈhaɪ.drɪ.dʒən/ noun [ U ]
the lightest gas, with no colour, taste or smell, that combines with oxygen to form water