watch vs follow

watch is a noun but follow is not a noun.

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

As verbs, watch and follow are synonyms defined as:

Other synonyms of watch include keep an eye on, observe, watch over.

watch (noun)	follow (noun)
a purposeful surveillance to guard or observe
the rite of staying awake for devotional purposes (especially on the eve of a religious festival)
a small portable timepiece
a person employed to keep watch for some anticipated event
a period of time (4 or 2 hours) during which some of a ship's crew are on duty
the period during which someone (especially a guard) is on duty

watch (verb)	follow (verb)
find out, learn, or determine with certainty, usually by making an inquiry or other effort	behave in accordance or in agreement with
look attentively	keep informed
be vigilant, be on the lookout or be careful	keep to
observe without intervening	follow, discover, or ascertain the course of development of something
observe or determine by looking	grasp the meaning
see or watch	imitate in behavior; take as a model
follow with the eyes or the mind	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