massif vs geological formation

massif and geological formation both are nouns.

Word	Noun	Adjective	Verb	Adverb
massif	Yes	No	No	No
geological formation	Yes	No	No	No

As nouns, geological formation is a hypernym of massif; that is, geological formation is a word with a broader meaning than massif:

massif: a block of the earth's crust bounded by faults and shifted to form peaks of a mountain range
geological formation: (geology) the geological features of the earth

Other hypernyms of massif include formation.

massif (noun)	geological formation (noun)
a block of the earth's crust bounded by faults and shifted to form peaks of a mountain range	(geology) the geological features of the earth