atomic warhead vs warhead

atomic warhead and warhead both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomic warhead	Yes	No	No	No
warhead	Yes	No	No	No

As nouns, warhead is a hypernym of atomic warhead; that is, warhead is a word with a broader meaning than atomic warhead:

atomic warhead: the warhead of a missile designed to deliver an atom bomb
warhead: the front part of a guided missile or rocket or torpedo that carries the nuclear or explosive charge or the chemical or biological agents

Other hypernyms of atomic warhead include load, payload.

atomic warhead (noun)	warhead (noun)
the warhead of a missile designed to deliver an atom bomb	the front part of a guided missile or rocket or torpedo that carries the nuclear or explosive charge or the chemical or biological agents