sea crawfish vs rock lobster

sea crawfish and rock lobster both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea crawfish	Yes	No	No	No
rock lobster	Yes	No	No	No

As nouns, sea crawfish and rock lobster are synonyms defined as:

sea crawfish and rock lobster: large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters

Other synonyms of sea crawfish include crawfish, crayfish, langouste, spiny lobster.

sea crawfish (noun)	rock lobster (noun)
large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters	large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters
	warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California