crayfish vs langouste

crayfish and langouste both are nouns.

Word	Noun	Adjective	Verb	Adverb
crayfish	Yes	No	No	No
langouste	Yes	No	No	No

As nouns, crayfish and langouste are synonyms defined as:

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

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

As nouns, crayfish and langouste are synonyms defined as:

crayfish and langouste: warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California

Other synonyms of crayfish include rock lobster, spiny lobster.

crayfish (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
small freshwater decapod crustacean that resembles a lobster	warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California
tiny lobster-like crustaceans usually boiled briefly
warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California