benzine

blue

day

depot

essence

exchange

expensive

extract

field

fossil

gas

gasolene

gasoline

gold

golden

green

gum

industry

marsh

minerals

naphtha

oil

oscillate

pendulum

petrol

petroleum

pipe

plant

point

pomp

pump

repairman

rich

rig

rock

rockoil

rubber

servant

sky

stage

station

tower

trumpet

ukraine

wheat

work