practician vs clinician

practician and clinician both are nouns.

Word	Noun	Adjective	Verb	Adverb
practician	Yes	No	No	No
clinician	Yes	No	No	No

As nouns, clinician is a hyponym of practician; that is, clinician is a word with a more specific, narrower meaning than practician:

practician: someone who practices a learned profession
clinician: a practitioner (of medicine or psychology) who does clinical work instead of laboratory experiments

Other hyponyms of practician include Gongorist, homeopath, homoeopath.

practician (noun)	clinician (noun)
someone who practices a learned profession	a practitioner (of medicine or psychology) who does clinical work instead of laboratory experiments