snowboarding vs coast

snowboarding and coast both are nouns.

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

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

snowboarding: the act of sliding down a snow-covered slope while standing on a snowboard
coast: the act of moving smoothly along a surface while remaining in contact with it

Other hypernyms of snowboarding include glide, slide.

snowboarding (noun)	coast (noun)
the act of sliding down a snow-covered slope while standing on a snowboard	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

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