derv vs diesel fuel

derv and diesel fuel both are nouns.

Word	Noun	Adjective	Verb	Adverb
derv	Yes	No	No	No
diesel fuel	Yes	No	No	No

As nouns, diesel fuel is a hypernym of derv; that is, diesel fuel is a word with a broader meaning than derv:

derv: diesel oil used in cars and lorries with diesel engines; from d(iesel) e(ngine) r(oad) v(ehicle)
diesel fuel: a heavy mineral oil used as fuel in diesel engines

Other hypernyms of derv include diesel oil.

derv (noun)	diesel fuel (noun)
diesel oil used in cars and lorries with diesel engines; from d(iesel) e(ngine) r(oad) v(ehicle)	a heavy mineral oil used as fuel in diesel engines