military engineer vs engineer

military engineer and engineer both are nouns.

Word	Noun	Adjective	Verb	Adverb
military engineer	Yes	No	No	No
engineer	Yes	No	Yes	No

As nouns, engineer is a hypernym of military engineer; that is, engineer is a word with a broader meaning than military engineer:

military engineer: a member of the military who is trained in engineering and construction work
engineer: a person who uses scientific knowledge to solve practical problems

Other hypernyms of military engineer include applied scientist, technologist.

military engineer (noun)	engineer (noun)
a member of the military who is trained in engineering and construction work	a person who uses scientific knowledge to solve practical problems
	the operator of a railway locomotive

military engineer (verb)	engineer (verb)
	plan and direct (a complex undertaking)
	design as an engineer