amphibious landing vs landing

amphibious landing and landing both are nouns.

Word	Noun	Adjective	Verb	Adverb
amphibious landing	Yes	No	No	No
landing	Yes	No	No	No

As nouns, landing is a hypernym of amphibious landing; that is, landing is a word with a broader meaning than amphibious landing:

amphibious landing: a military action of coordinated land, sea, and air forces organized for an invasion
landing: the act of coming to land after a voyage

Other hypernyms of amphibious landing include action, military action.

amphibious landing (noun)	landing (noun)
a military action of coordinated land, sea, and air forces organized for an invasion	the act of coming to land after a voyage
	the act of coming down to the earth (or other surface)
	structure providing a place where boats can land people or goods
	an intermediate platform in a staircase