windsurf vs surf

windsurf is not a noun while surf is a noun.

Word	Noun	Adjective	Verb	Adverb
windsurf	No	No	Yes	No
surf	Yes	No	Yes	No

As verbs, surf is a hypernym of windsurf; that is, surf is a word with a broader meaning than windsurf:

Other hypernyms of windsurf include surfboard.

windsurf (noun)	surf (noun)
	waves breaking on the shore

windsurf (verb)	surf (verb)
ride standing on a surfboard with an attached sail, on water	switch channels, on television
	look around casually and randomly, without seeking anything in particular
	ride the waves of the sea with a surfboard