speculate vs theologize

speculate and theologize both are verbs.

Word	Noun	Adjective	Verb	Adverb
speculate	No	No	Yes	No
theologize	No	No	Yes	No

As verbs, theologize is a hyponym of speculate; that is, theologize is a word with a more specific, narrower meaning than speculate:

speculate: reflect deeply on a subject
theologize: make theoretical speculations about theology or discuss theological subjects

Other hyponyms of speculate include premeditate, theologise, introspect, bethink, cogitate, question, wonder, puzzle, consider, study.

speculate (verb)	theologize (verb)
reflect deeply on a subject	make theoretical speculations about theology or discuss theological subjects
to believe especially on uncertain or tentative grounds	treat from a theological viewpoint or render theological in character
talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion
invest at a risk