cockle vs Cardium edule

cockle and Cardium edule both are nouns.

Word	Noun	Adjective	Verb	Adverb
cockle	Yes	No	Yes	No
Cardium edule	Yes	No	No	No

As nouns, Cardium edule is a hyponym of cockle; that is, Cardium edule is a word with a more specific, narrower meaning than cockle:

cockle: common edible, burrowing European bivalve mollusk that has a strong, rounded shell with radiating ribs
Cardium edule: common edible European cockle

Other hyponyms of cockle include edible cockle.

cockle (noun)	Cardium edule (noun)
common edible, burrowing European bivalve mollusk that has a strong, rounded shell with radiating ribs	common edible European cockle
common edible European bivalve

cockle (verb)	Cardium edule (verb)
to gather something into small wrinkles or folds
stir up (water) so as to form ripples