noncombatant vs serviceman

noncombatant and serviceman both are nouns.

Word	Noun	Adjective	Verb	Adverb
noncombatant	Yes	Yes	No	No
serviceman	Yes	No	No	No

As nouns, serviceman is a hypernym of noncombatant; that is, serviceman is a word with a broader meaning than noncombatant:

noncombatant: a member of the armed forces who does not participate in combat (e.g. a chaplain or surgeon)
serviceman: someone who serves in the armed forces; a member of a military force

Other hypernyms of noncombatant include man, military man, military personnel.

noncombatant (noun)	serviceman (noun)
a member of the armed forces who does not participate in combat (e.g. a chaplain or surgeon)	someone who serves in the armed forces; a member of a military force

noncombatant (adjective)	serviceman (adjective)
member of armed forces whose duties do not include fighting as e.g. a chaplain or surgeon
used of civilians in time of war