talk of vs talk over

talk of and talk over both are verbs.

Word	Noun	Adjective	Verb	Adverb
talk of	No	No	Yes	No
talk over	No	No	Yes	No

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

talk of: discuss or mention
talk over: speak with others about (something); talk (something) over in detail; have a discussion

Other hyponyms of talk of include discuss, hash out, blaspheme.

talk of (verb)	talk over (verb)
discuss or mention	speak with others about (something); talk (something) over in detail; have a discussion