Round table and Round robin

Round table noun - A meeting of peers for discussion and exchange of views.

Round robin and round table are semantically related In some cases you can use "Round robin" instead a noun phrase "Round table".

Round robin noun - A tournament in which every contestant plays every other contestant.

Round table and round robin are semantically related in convention topic. You can use "Round table" instead a noun phrase "Round robin", if it concerns topics such as conference.