V-1 vs guided missile

V-1 and guided missile both are nouns.

Word	Noun	Adjective	Verb	Adverb
V-1	Yes	No	No	No
guided missile	Yes	No	No	No

As nouns, guided missile is a hypernym of V-1; that is, guided missile is a word with a broader meaning than V-1:

V-1: 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

V-1 (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