cacuminal vs retroflex

cacuminal and retroflex both are adjectives.

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

As adjectives, cacuminal and retroflex are synonyms defined as:

cacuminal and retroflex: pronounced with the tip of the tongue turned back toward the hard palate

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

cacuminal (verb)	retroflex (verb)
	articulate (a consonant) with the tongue curled back against the palate
	bend or turn backward