theoriser vs theorist

theoriser and theorist both are nouns.

Word	Noun	Adjective	Verb	Adverb
theoriser	Yes	No	No	No
theorist	Yes	No	No	No

As nouns, theoriser and theorist are synonyms defined as:

theoriser and theorist: someone who theorizes (especially in science or art)

Other synonyms of theoriser include idealogue, theoretician, theorizer.

theoriser (noun)	theorist (noun)
someone who theorizes (especially in science or art)	someone who theorizes (especially in science or art)