crude vs oil

crude and oil both are nouns.

Word	Noun	Adjective	Verb	Adverb
crude	Yes	Yes	No	No
oil	Yes	No	Yes	No

As nouns, crude and oil are synonyms defined as:

Other synonyms of crude include crude oil, fossil oil, petroleum, rock oil.

As nouns, oil is a hypernym of crude; that is, oil is a word with a broader meaning than crude:

crude: a dark oil consisting mainly of hydrocarbons
oil: a slippery or viscous liquid or liquefiable substance not miscible with water

Other hypernyms of crude include fossil fuel.

crude (noun)	oil (noun)
a dark oil consisting mainly of hydrocarbons	oil paint containing pigment that is used by an artist
	any of a group of liquid edible fats that are obtained from plants
	a slippery or viscous liquid or liquefiable substance not miscible with water
	a dark oil consisting mainly of hydrocarbons

crude (adjective)	oil (adjective)
not refined or processed
belonging to an early stage of technical development; characterized by simplicity and (often) crudeness
conspicuously and tastelessly indecent
not processed or subjected to analysis
devoid of any qualifications or disguise or adornment
not carefully or expertly made

crude (verb)	oil (verb)
	administer an oil or ointment to; often in a religious ceremony of blessing
	cover with oil, as if by rubbing