bomb out vs bomb

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

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

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

Other hypernyms of bomb out include bombard.

bomb out (noun)	bomb (noun)
	an explosive device fused to explode under specific conditions
	strong sealed vessel for measuring heat of combustion
	an event that fails badly or is totally ineffectual

bomb out (verb)	bomb (verb)
make somebody homeless by destroying their houses with bombs	throw bombs at or attack with bombs
	fail to get a passing grade