retrovert vs regress

retrovert is not a noun while regress is a noun.

Word	Noun	Adjective	Verb	Adverb
retrovert	No	No	Yes	No
regress	Yes	No	Yes	No

As verbs, retrovert and regress are synonyms defined as:

Other synonyms of retrovert include return, revert, turn back.

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

Other hyponyms of retrovert include fall back, lapse, recidivate, relapse, retrogress, resile, go back, recover, recuperate.

retrovert (noun)	regress (noun)
	returning to a former state
	the reasoning involved when you assume the conclusion is true and reason backward to the evidence

retrovert (verb)	regress (verb)
go back to a previous state	go back to bad behavior
	get worse or fall back to a previous condition
	go back to a previous state
	go back to a statistical means