sea crawfish vs langouste

sea crawfish and langouste both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea crawfish	Yes	No	No	No
langouste	Yes	No	No	No

As nouns, sea crawfish and langouste are synonyms defined as:

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

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

sea crawfish (noun)	langouste (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