retroflex vs replicate

retroflex is an adjective but replicate is not an adjective.

Word	Noun	Adjective	Verb	Adverb
retroflex	No	Yes	Yes	No
replicate	No	No	Yes	No

As verbs, retroflex and replicate are synonyms defined as:

retroflex (adjective)	replicate (adjective)
bent or curved backward
pronounced with the tip of the tongue turned back toward the hard palate

retroflex (verb)	replicate (verb)
articulate (a consonant) with the tongue curled back against the palate	make or do or perform again
bend or turn backward	reproduce or make an exact copy of
	bend or turn backward