langouste vs rock lobster

langouste and rock lobster both are nouns.

Word	Noun	Adjective	Verb	Adverb
langouste	Yes	No	No	No
rock lobster	Yes	No	No	No

As nouns, langouste and rock lobster are synonyms defined as:

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

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

As nouns, langouste and rock lobster are synonyms defined as:

langouste and rock lobster: 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 langouste include crayfish, spiny lobster.

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