pursue vs trail

pursue is not a noun while trail is a noun.

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

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

Other hyponyms of pursue include stalk, chase, chase after, dog, give chase, go after, tag, tail, track, haunt, stalk.

pursue (noun)	trail (noun)
	a path or track roughly blazed through wild or hilly country
	evidence pointing to a possible solution
	a track or mark left by something that has passed

pursue (verb)	trail (verb)
go in search of or hunt for	drag loosely along a surface; allow to sweep the ground
follow in or as if in pursuit	hang down so as to drag along the ground
carry out or participate in an activity; be involved in	go after with the intent to catch
carry further or advance	move, proceed, or walk draggingly or slowly
	to lag or linger behind