mine vs excavation

mine and excavation both are nouns.

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

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

mine (noun)	excavation (noun)
explosive device that explodes on contact; designed to destroy vehicles or ships or to kill or maim personnel	the act of extracting ores or coal etc from the earth
excavation in the earth from which ores and minerals are extracted	the act of digging
	a hole in the ground made by excavating
	the site of an archeological exploration

mine (verb)	excavation (verb)
lay mines
get from the earth by excavation