military greeting vs greeting

military greeting and greeting both are nouns.

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

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

military greeting: a formal military gesture of respect
greeting: (usually plural) an acknowledgment or expression of good will (especially on meeting)

Other hypernyms of military greeting include salutation.

military greeting (noun)	greeting (noun)
a formal military gesture of respect	(usually plural) an acknowledgment or expression of good will (especially on meeting)