smart bomb vs bomb

smart bomb and bomb both are nouns.

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

As nouns, bomb is a hypernym of smart bomb; that is, bomb is a word with a broader meaning than smart bomb:

smart bomb: a bomb that can be guided (by a laser beam or radio) to its target
bomb: an explosive device fused to explode under specific conditions

smart bomb (noun)	bomb (noun)
a bomb that can be guided (by a laser beam or radio) to its target	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

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