littoral zone vs littoral

littoral zone and littoral both are nouns.

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

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

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

Other synonyms of littoral zone include litoral, sands.

littoral zone (noun)	littoral (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

littoral zone (adjective)	littoral (adjective)
	of or relating to a coastal or shore region