preconceived notion vs parti pris

preconceived notion and parti pris both are nouns.

Word	Noun	Adjective	Verb	Adverb
preconceived notion	Yes	No	No	No
parti pris	Yes	No	No	No

As nouns, preconceived notion and parti pris are synonyms defined as:

preconceived notion and parti pris: an opinion formed beforehand without adequate evidence

Other synonyms of preconceived notion include preconceived idea, preconceived opinion, preconception, prepossession.

preconceived notion (noun)	parti pris (noun)
an opinion formed beforehand without adequate evidence	an opinion formed beforehand without adequate evidence