prepossession vs parti pris

prepossession and parti pris both are nouns.

Word	Noun	Adjective	Verb	Adverb
prepossession	Yes	No	No	No
parti pris	Yes	No	No	No

As nouns, prepossession and parti pris are synonyms defined as:

prepossession and parti pris: an opinion formed beforehand without adequate evidence

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

prepossession (noun)	parti pris (noun)
an opinion formed beforehand without adequate evidence	an opinion formed beforehand without adequate evidence
the condition of being prepossessed