area bombing vs bombing

area bombing and bombing both are nouns.

Word	Noun	Adjective	Verb	Adverb
area bombing	Yes	No	No	No
bombing	Yes	No	No	No

As nouns, bombing is a hypernym of area bombing; that is, bombing is a word with a broader meaning than area bombing:

area bombing: an extensive and systematic bombing intended to devastate a large target
bombing: an attack by dropping bombs

Other hypernyms of area bombing include bombardment.

area bombing (noun)	bombing (noun)
an extensive and systematic bombing intended to devastate a large target	an attack by dropping bombs
	the use of bombs for sabotage; a tactic frequently used by terrorists