stealth bomber vs bomber

stealth bomber and bomber both are nouns.

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

As nouns, bomber is a hypernym of stealth bomber; that is, bomber is a word with a broader meaning than stealth bomber:

Other hypernyms of stealth bomber include stealth aircraft.

stealth bomber (noun)	bomber (noun)
a bomber that is difficult to detect by radar	a military aircraft that drops bombs during flight
	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
	a person who plants bombs