bomb vs bomber

bomb and bomber both are nouns.

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

bomb (noun)	bomber (noun)
an explosive device fused to explode under specific conditions	a military aircraft that drops bombs during flight
strong sealed vessel for measuring heat of combustion	a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States
an event that fails badly or is totally ineffectual	a person who plants bombs

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