rhodolite vs garnet

rhodolite and garnet both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhodolite	Yes	No	No	No
garnet	Yes	No	No	No

As nouns, garnet is a hypernym of rhodolite; that is, garnet is a word with a broader meaning than rhodolite:

rhodolite: a red or pink variety of garnet used as a gemstone
garnet: any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive

rhodolite (noun)	garnet (noun)
a red or pink variety of garnet used as a gemstone	any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive