flush it vs bomb

flush it is not a noun while bomb is a noun.

Word	Noun	Adjective	Verb	Adverb
flush it	No	No	Yes	No
bomb	Yes	No	Yes	No

As verbs, flush it and bomb are synonyms defined as:

Other synonyms of flush it include fail, flunk.

flush it (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

flush it (verb)	bomb (verb)
fail to get a passing grade	throw bombs at or attack with bombs
	fail to get a passing grade