bombard vs firebomb

bombard and firebomb both are nouns.

Word	Noun	Adjective	Verb	Adverb
bombard	Yes	No	Yes	No
firebomb	Yes	No	Yes	No

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

bombard (noun)	firebomb (noun)
a large shawm; the bass member of the shawm family	a bomb that is designed to start fires; is most effective against flammable targets (such as fuel)

bombard (verb)	firebomb (verb)
direct high energy particles or radiation against	attack with incendiary bombs
address with continuously or persistently, as if with a barrage
throw bombs at or attack with bombs
cast, hurl, or throw repeatedly with some missile