litoral vs littoral zone

litoral and littoral zone both are nouns.

Word	Noun	Adjective	Verb	Adverb
litoral	Yes	No	No	No
littoral zone	Yes	No	No	No

As nouns, litoral and littoral zone are synonyms defined as:

litoral and littoral zone: the region of the shore of a lake or sea or ocean

Other synonyms of litoral include littoral, sands.

litoral (noun)	littoral zone (noun)
the region of the shore of a lake or sea or ocean	the region of the shore of a lake or sea or ocean