cherrystone clam vs quahog

cherrystone clam and quahog both are nouns.

Word	Noun	Adjective	Verb	Adverb
cherrystone clam	Yes	No	No	No
quahog	Yes	No	No	No

As nouns, quahog is a hypernym of cherrystone clam; that is, quahog is a word with a broader meaning than cherrystone clam:

cherrystone clam: a half-grown quahog
quahog: an edible American clam; the heavy shells were used as money by some American Indians

Other hypernyms of cherrystone clam include hard-shell clam, hard clam, Mercenaria mercenaria, quahaug, round clam, Venus mercenaria.

As nouns, quahog is a hypernym of cherrystone clam; that is, quahog is a word with a broader meaning than cherrystone clam:

cherrystone clam: small quahog larger than a littleneck; eaten raw or cooked as in e.g. clams casino
quahog: Atlantic coast round clams with hard shells; large clams usually used for chowders or other clam dishes

Other hypernyms of cherrystone clam include hard-shell clam, quahaug, round clam.

cherrystone clam (noun)	quahog (noun)
a half-grown quahog	an edible American clam; the heavy shells were used as money by some American Indians
small quahog larger than a littleneck; eaten raw or cooked as in e.g. clams casino	Atlantic coast round clams with hard shells; large clams usually used for chowders or other clam dishes