seasnail vs whelk

seasnail and whelk both are nouns.

Word	Noun	Adjective	Verb	Adverb
seasnail	Yes	No	No	No
whelk	Yes	No	Yes	No

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

seasnail: any of several creeping marine gastropods with a spirally coiled shell: whelks, tritons, moon shells, neritids
whelk: large carnivorous marine gastropods of coastal waters and intertidal regions having a strong snail-like shell

Other hyponyms of seasnail include neritid, neritid gastropod, triton, moon shell, moonshell, periwinkle, winkle, limpet.

seasnail (noun)	whelk (noun)
small tadpole-shaped cold-water fishes with pelvic fins forming a sucker; related to lumpfish	large carnivorous marine gastropods of coastal waters and intertidal regions having a strong snail-like shell
any of several creeping marine gastropods with a spirally coiled shell: whelks, tritons, moon shells, neritids	large marine snail much used as food in Europe

seasnail (verb)	whelk (verb)
	gather whelk