bomb out vs bombard

bomb out is not a noun while bombard is a noun.

Word	Noun	Adjective	Verb	Adverb
bomb out	No	No	Yes	No
bombard	Yes	No	Yes	No

As verbs, bombard is a hypernym of bomb out; that is, bombard is a word with a broader meaning than bomb out:

Other hypernyms of bomb out include bomb.

bomb out (noun)	bombard (noun)
	a large shawm; the bass member of the shawm family

bomb out (verb)	bombard (verb)
make somebody homeless by destroying their houses with bombs	direct high energy particles or radiation against
	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