accent vs enunciate

accent is a noun but enunciate is not a noun.

Word	Noun	Adjective	Verb	Adverb
accent	Yes	No	Yes	No
enunciate	No	No	Yes	No

As verbs, enunciate is a hypernym of accent; that is, enunciate is a word with a broader meaning than accent:

Other hypernyms of accent include articulate, enounce, pronounce, say, sound out.

accent (noun)	enunciate (noun)
the relative prominence of a syllable or musical note (especially with regard to stress or pitch)
distinctive manner of oral expression
a diacritical mark used to indicate stress or placed above a vowel to indicate a special pronunciation
the usage or vocabulary that is characteristic of a specific group of people
special importance or significance

accent (verb)	enunciate (verb)
put stress on; utter with an accent	express or state clearly
to stress, single out as important	speak, pronounce, or utter in a certain way