cinnamon stone vs garnet

cinnamon stone and garnet both are nouns.

Word	Noun	Adjective	Verb	Adverb
cinnamon stone	Yes	No	No	No
garnet	Yes	No	No	No

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

cinnamon stone: a garnet ranging in color from yellow to brown
garnet: any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive

cinnamon stone (noun)	garnet (noun)
a garnet ranging in color from yellow to brown	any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive