salute vs greeting

salute and greeting both are nouns.

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

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

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

Other hypernyms of salute include salutation.

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

salute: an act of greeting with friendly words and gestures like bowing or lifting the hat
greeting: (usually plural) an acknowledgment or expression of good will (especially on meeting)

Other hypernyms of salute include salutation.

salute (noun)	greeting (noun)
an act of honor or courteous recognition	(usually plural) an acknowledgment or expression of good will (especially on meeting)
a formal military gesture of respect
an act of greeting with friendly words and gestures like bowing or lifting the hat

salute (verb)	greeting (verb)
greet in a friendly way
recognize with a gesture prescribed by a military regulation; assume a prescribed position
honor with a military ceremony, as when honoring dead soldiers
express commendation of
propose a toast to
become noticeable