follow vs tail

follow is not a noun while tail is a noun.

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

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

Other hyponyms of follow include stalk, chase, chase after, dog, give chase, go after, tag, track, trail, haunt, stalk.

follow (noun)	tail (noun)
	the posterior part of the body of a vertebrate especially when elongated and extending beyond the trunk or main part of the body
	the rear part of a ship
	the rear part of an aircraft
	(usually plural) the reverse side of a coin that does not bear the representation of a person's head
	the fleshy part of the human body that you sit on
	a spy employed to follow someone and report their movements
	any projection that resembles the tail of an animal
	the time of the last part of something

follow (verb)	tail (verb)
behave in accordance or in agreement with	remove or shorten the tail of an animal
keep informed	remove the stalk of fruits or berries
keep to	go after with the intent to catch
follow, discover, or ascertain the course of development of something
grasp the meaning
imitate in behavior; take as a model
perform an accompaniment to
to travel behind, go after, come after
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