slalom vs ski

slalom and ski both are nouns.

Word	Noun	Adjective	Verb	Adverb
slalom	Yes	No	Yes	No
ski	Yes	No	Yes	No

As verbs, ski is a hypernym of slalom; that is, ski is a word with a broader meaning than slalom:

slalom (noun)	ski (noun)
a downhill race over a winding course defined by upright poles	narrow wood or metal or plastic runners used in pairs for gliding over snow

slalom (verb)	ski (verb)
race on skis around obstacles	move along on skis