profess vs vow

profess is not a noun while vow is a noun.

Word	Noun	Adjective	Verb	Adverb
profess	No	No	Yes	No
vow	Yes	No	Yes	No

As verbs, vow is a hypernym of profess; that is, vow is a word with a broader meaning than profess:

profess (noun)	vow (noun)
	a solemn pledge (to oneself or to another or to a deity) to do something or to behave in a certain manner

profess (verb)	vow (verb)
practice as a profession, teach, or claim to be knowledgeable about	make a vow; promise
take vows, as in religious order	dedicate to a deity by a vow
admit (to a wrongdoing)
confess one's faith in, or allegiance to
state insincerely
receive into a religious order or congregation
state freely