sardine vs chalcedony

sardine and chalcedony both are nouns.

Word	Noun	Adjective	Verb	Adverb
sardine	Yes	No	No	No
chalcedony	Yes	No	No	No

As nouns, chalcedony is a hypernym of sardine; that is, chalcedony is a word with a broader meaning than sardine:

Other hypernyms of sardine include calcedony.

sardine (noun)	chalcedony (noun)
any of various small edible herring or related food fishes frequently canned	a milky or greyish translucent to transparent quartz
small fishes found in great schools along coasts of Europe; smaller and rounder than herring
small fatty fish usually canned
a deep orange-red variety of chalcedony