track vs trail

track and trail both are nouns.

Word	Noun	Adjective	Verb	Adverb
track	Yes	No	Yes	No
trail	Yes	No	Yes	No

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

Other hyponyms of track include portage.

As nouns, track and trail are synonyms defined as:

Other synonyms of track include lead.

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

Other hyponyms of track include collision course, inside track, round, steps, belt, swath.

As verbs, track and trail are synonyms defined as:

Other synonyms of track include chase, chase after, dog, give chase, go after, tag, tail.

track (noun)	trail (noun)
the act of participating in an athletic competition involving running on a track	a path or track roughly blazed through wild or hilly country
any road or path affording passage especially a rough one	evidence pointing to a possible solution
a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll	a track or mark left by something that has passed
a pair of parallel rails providing a runway for wheels
a groove on a phonograph recording
(computer science) one of the circular magnetic paths on a magnetic disk that serve as a guide for writing and reading data
a course over which races are run
an endless metal belt on which tracked vehicles move over the ground
evidence pointing to a possible solution
a distinct selection of music from a recording or a compact disc
a line or route along which something travels or moves

track (verb)	trail (verb)
make tracks upon	drag loosely along a surface; allow to sweep the ground
go after with the intent to catch	hang down so as to drag along the ground
travel across or pass over	go after with the intent to catch
carry on the feet and deposit	move, proceed, or walk draggingly or slowly
observe or plot the moving path of something	to lag or linger behind