mining vs strip mine

mining and strip mine both are nouns.

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

mining (noun)	strip mine (noun)
the act of extracting ores or coal etc from the earth	an open mine (usually for coal) where the seams run close to the surface
laying explosive mines in concealed places to destroy enemy personnel and equipment

mining (verb)	strip mine (verb)
	extract (ore) from a strip-mine