談論

(1)an extended communication (often interactive) dealing with some particular topic; "the book contains an excellent discussion of modal logic"; "his treatment of the race question is badly biased"

(2)ある議題を巡っての広範にわたる（しばしば相互的な）コミュニケーション

(3)an exchange of views on some topic; "we had a good discussion"; "we had a word or two about it"

(4)ある話題について考えを交換し合うこと

(1)