econometrist vs econometrician

econometrist and econometrician both are nouns.

Word	Noun	Adjective	Verb	Adverb
econometrist	Yes	No	No	No
econometrician	Yes	No	No	No

As nouns, econometrist and econometrician are synonyms defined as:

econometrist and econometrician: an economist who uses statistical and mathematical methods

econometrist (noun)	econometrician (noun)
an economist who uses statistical and mathematical methods	an economist who uses statistical and mathematical methods