credentialled vs certified

credentialled and certified both are adjectives.

Word	Noun	Adjective	Verb	Adverb
credentialled	No	Yes	No	No
certified	No	Yes	No	No

credentialled (adjective)	certified (adjective)
certified as professional by evidence or testimonials	endorsed authoritatively as having met certain requirements
	fit to be certified as insane (and treated accordingly)
	holding appropriate documentation and officially on record as qualified to perform a specified function or practice a specified skill