resid vs petroleum

resid and petroleum both are nouns.

Word	Noun	Adjective	Verb	Adverb
resid	Yes	No	No	No
petroleum	Yes	No	No	No

As nouns, petroleum is a hypernym of resid; that is, petroleum is a word with a broader meaning than resid:

Other hypernyms of resid include crude, crude oil, fossil oil, oil, rock oil.

resid (noun)	petroleum (noun)
oil products that remain after petroleum has been distilled	a dark oil consisting mainly of hydrocarbons