follow vs trace

follow is not a noun while trace is a noun.

Word	Noun	Adjective	Verb	Adverb
follow	No	No	Yes	No
trace	Yes	No	Yes	No

As verbs, follow and trace are synonyms defined as:

follow and trace: follow, discover, or ascertain the course of development of something

follow (noun)	trace (noun)
	a drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original image
	either of two lines that connect a horse's harness to a wagon or other vehicle or to a whiffletree
	an indication that something has been present
	a suggestion of some quality
	a visible mark (as a footprint) left by the passage of person or animal or vehicle
	a just detectable amount

follow (verb)	trace (verb)
behave in accordance or in agreement with	follow, discover, or ascertain the course of development of something
keep informed	read with difficulty
keep to	make a mark or lines on a surface
follow, discover, or ascertain the course of development of something	copy by following the lines of the original drawing on a transparent sheet placed upon it; make a tracing of
grasp the meaning	pursue or chase relentlessly
imitate in behavior; take as a model	to go back over again
perform an accompaniment to	make one's course or travel along a path; travel or pass over, around, or along
to travel behind, go after, come after	discover traces of
travel along a certain course
follow in or as if in pursuit
keep under surveillance
choose and follow; as of theories, ideas, policies, strategies or plans
to subscribe to someone's updates on social media
to be subscribed to updates from another user on social media
act in accordance with someone's rules, commands, or wishes
be the successor (of)
follow with the eyes or the mind
work in a specific place, with a specific subject, or in a specific function
accept and follow the leadership or command or guidance of
adhere to or practice
be later in time
come after in time, as a result
be next
to bring something about at a later time than
to be the product or result
come as a logical consequence; follow logically