eschatologist vs theologiser

eschatologist and theologiser both are nouns.

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

As nouns, theologiser is a hypernym of eschatologist; that is, theologiser is a word with a broader meaning than eschatologist:

eschatologist: a theologian who specializes in eschatology
theologiser: someone who is learned in theology or who speculates about theology

Other hypernyms of eschatologist include theologian, theologist, theologizer.

eschatologist (noun)	theologiser (noun)
a theologian who specializes in eschatology	someone who is learned in theology or who speculates about theology