kimberlite vs peridotite

kimberlite and peridotite both are nouns.

Word	Noun	Adjective	Verb	Adverb
kimberlite	Yes	No	No	No
peridotite	Yes	No	No	No

As nouns, peridotite is a hypernym of kimberlite; that is, peridotite is a word with a broader meaning than kimberlite:

kimberlite: a rare type of peridotite that sometimes contains diamonds; found in South Africa and Siberia
peridotite: a dark coarse-grained igneous rock consisting principally of olivine

kimberlite (noun)	peridotite (noun)
a rare type of peridotite that sometimes contains diamonds; found in South Africa and Siberia	a dark coarse-grained igneous rock consisting principally of olivine