strip mine vs mine

strip mine and mine both are nouns.

Word	Noun	Adjective	Verb	Adverb
strip mine	Yes	No	Yes	No
mine	Yes	No	Yes	No

As nouns, mine is a hypernym of strip mine; that is, mine is a word with a broader meaning than strip mine:

strip mine: an open mine (usually for coal) where the seams run close to the surface
mine: excavation in the earth from which ores and minerals are extracted

As verbs, mine is a hypernym of strip mine; that is, mine is a word with a broader meaning than strip mine:

strip mine (noun)	mine (noun)
an open mine (usually for coal) where the seams run close to the surface	explosive device that explodes on contact; designed to destroy vehicles or ships or to kill or maim personnel
	excavation in the earth from which ores and minerals are extracted

strip mine (verb)	mine (verb)
extract (ore) from a strip-mine	lay mines
	get from the earth by excavation