landfall vs coast

landfall and coast both are nouns.

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

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

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

landfall (noun)	coast (noun)
the first sighting of land from the sea after a voyage (or flight over water)	the act of moving smoothly along a surface while remaining in contact with it
the seacoast first sighted on a voyage (or flight over water)	the area within view
	the shore of a sea or ocean
	a slope down which sleds may coast

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