snowboarder vs slider

snowboarder and slider both are nouns.

Word	Noun	Adjective	Verb	Adverb
snowboarder	Yes	No	No	No
slider	Yes	No	No	No

As nouns, slider is a hypernym of snowboarder; that is, slider is a word with a broader meaning than snowboarder:

snowboarder: someone who slides down snow-covered slopes while standing on a snowboard
slider: a person who slips or slides because of loss of traction

Other hypernyms of snowboarder include skidder, slipper.

snowboarder (noun)	slider (noun)
someone who slides down snow-covered slopes while standing on a snowboard	a fastball that curves slightly away from the side from which it was thrown
	freshwater turtle of United States and South America; frequently raised commercially; some young sold as pets
	someone who races the luge
	a person who slips or slides because of loss of traction