struggle vs combat

struggle and combat both are nouns.

Word	Noun	Adjective	Verb	Adverb
struggle	Yes	No	Yes	No
combat	Yes	No	Yes	No

As nouns, combat is a hyponym of struggle; that is, combat is a word with a more specific, narrower meaning than struggle:

As verbs, combat is a hyponym of struggle; that is, combat is a word with a more specific, narrower meaning than struggle:

struggle (noun)	combat (noun)
strenuous effort	an engagement fought between two military forces
an energetic attempt to achieve something	the act of fighting; any contest or struggle
an open clash between two opposing groups (or individuals)

struggle (verb)	combat (verb)
be engaged in a fight; carry on a fight	battle or contend against in or as if in a battle
to exert strenuous effort against opposition
climb awkwardly, as if by scrambling
make a strenuous or labored effort