buzz bomb vs guided missile

buzz bomb and guided missile both are nouns.

Word	Noun	Adjective	Verb	Adverb
buzz bomb	Yes	No	No	No
guided missile	Yes	No	No	No

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

buzz bomb: a small jet-propelled winged missile that carries a bomb
guided missile: a rocket-propelled missile whose path can be controlled during flight either by radio signals or by internal homing devices

buzz bomb (noun)	guided missile (noun)
a small jet-propelled winged missile that carries a bomb	a rocket-propelled missile whose path can be controlled during flight either by radio signals or by internal homing devices