divest vs undress

divest is not a noun while undress is a noun.

Word	Noun	Adjective	Verb	Adverb
divest	No	No	Yes	No
undress	Yes	No	Yes	No

As verbs, divest and undress are synonyms defined as:

Other synonyms of divest include disinvest, strip.

divest (noun)	undress (noun)
	partial or complete nakedness

divest (verb)	undress (verb)
remove (someone's or one's own) clothes	get undressed
reduce or dispose of; cease to hold (an investment)	remove (someone's or one's own) clothes
take away possessions from someone
deprive of status or authority