trail vs ski run

trail and ski run both are nouns.

Word	Noun	Adjective	Verb	Adverb
trail	Yes	No	Yes	No
ski run	Yes	No	No	No

As nouns, ski run is a hyponym of trail; that is, ski run is a word with a more specific, narrower meaning than trail:

Other hyponyms of trail include cattle trail, deer trail, horse-trail, Indian trail, mountain trail, ski trail.

trail (noun)	ski run (noun)
a path or track roughly blazed through wild or hilly country	trail or slope prepared for skiing
evidence pointing to a possible solution
a track or mark left by something that has passed

trail (verb)	ski run (verb)
drag loosely along a surface; allow to sweep the ground
hang down so as to drag along the ground
go after with the intent to catch
move, proceed, or walk draggingly or slowly
to lag or linger behind