soft-shelled crab vs crab

soft-shelled crab and crab both are nouns.

Word	Noun	Adjective	Verb	Adverb
soft-shelled crab	Yes	No	No	No
crab	Yes	No	Yes	No

As nouns, crab is a hypernym of soft-shelled crab; that is, crab is a word with a broader meaning than soft-shelled crab:

soft-shelled crab: edible crab that has recently molted and not yet formed its new shell
crab: decapod having eyes on short stalks and a broad flattened carapace with a small abdomen folded under the thorax and pincers

As nouns, crab is a hypernym of soft-shelled crab; that is, crab is a word with a broader meaning than soft-shelled crab:

soft-shelled crab: freshly molted crab with new shell still tender and flexible
crab: the edible flesh of any of various crabs

Other hypernyms of soft-shelled crab include crabmeat.

soft-shelled crab (noun)	crab (noun)
edible crab that has recently molted and not yet formed its new shell	a stroke of the oar that either misses the water or digs too deeply
freshly molted crab with new shell still tender and flexible	decapod having eyes on short stalks and a broad flattened carapace with a small abdomen folded under the thorax and pincers
	a louse that infests the pubic region of the human body
	the edible flesh of any of various crabs
	a quarrelsome grouch

soft-shelled crab (verb)	crab (verb)
	complain
	fish for crab
	scurry sideways like a crab
	direct (an aircraft) into a crosswind