coast vs litoral

coast and litoral both are nouns.

Word	Noun	Adjective	Verb	Adverb
coast	Yes	No	Yes	No
litoral	Yes	No	No	No

As nouns, litoral is a hyponym of coast; that is, litoral is a word with a more specific, narrower meaning than coast:

Other hyponyms of coast include littoral, littoral zone, sands, landfall, seaboard, seaside, tideland.

coast (noun)	litoral (noun)
the act of moving smoothly along a surface while remaining in contact with it	the region of the shore of a lake or sea or ocean
the area within view
the shore of a sea or ocean
a slope down which sleds may coast

coast (verb)	litoral (verb)
move effortlessly; by force of gravity