theologiser vs theologian

theologiser and theologian both are nouns.

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

As nouns, theologiser and theologian are synonyms defined as:

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

Other synonyms of theologiser include theologist, theologizer.

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