tideland vs coast

tideland and coast both are nouns.

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

As nouns, coast is a hypernym of tideland; that is, coast is a word with a broader meaning than tideland:

Other hypernyms of tideland include sea-coast, seacoast, seashore.

tideland (noun)	coast (noun)
land near the sea that is overflowed by the tide	the act of moving smoothly along a surface while remaining in contact with it
	the area within view
	the shore of a sea or ocean
	a slope down which sleds may coast

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