theologist vs theologiser

theologist and theologiser both are nouns.

Word	Noun	Adjective	Verb	Adverb
theologist	Yes	No	No	No
theologiser	Yes	No	No	No

As nouns, theologist and theologiser are synonyms defined as:

theologist and theologiser: someone who is learned in theology or who speculates about theology

Other synonyms of theologist include theologian, theologizer.

theologist (noun)	theologiser (noun)
someone who is learned in theology or who speculates about theology	someone who is learned in theology or who speculates about theology