garnet vs rhodolite

garnet and rhodolite both are nouns.

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

As nouns, rhodolite is a hyponym of garnet; that is, rhodolite is a word with a more specific, narrower meaning than garnet:

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

Other hyponyms of garnet include almandine, almandite, andradite, carbuncle, cinnamon stone, essonite, hessonite, pyrope.

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