certifiable vs certified

certifiable and certified both are adjectives.

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

As adjectives, certifiable and certified are synonyms defined as:

certifiable and certified: fit to be certified as insane (and treated accordingly)

certifiable (adjective)	certified (adjective)
capable of being guaranteed or certified	endorsed authoritatively as having met certain requirements
fit to be certified as insane (and treated accordingly)	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