cannoneer vs military man

cannoneer and military man both are nouns.

Word	Noun	Adjective	Verb	Adverb
cannoneer	Yes	No	No	No
military man	Yes	No	No	No

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

cannoneer: a serviceman in the artillery
military man: someone who serves in the armed forces; a member of a military force

Other hypernyms of cannoneer include man, military personnel, serviceman.

cannoneer (noun)	military man (noun)
a serviceman in the artillery	someone who serves in the armed forces; a member of a military force