回合： 1）the glossary of chinese chess 走了一回合，下了一回合 2）a round ;a bout 交战一回合 会见： meet, to meet with; to have an interview with; to interview it always describe the meetting in some countries' leaders 见面： 1）to meet; to see; to come face to face 他和她天天在学校里见面。 2）to contact; to link 我们在哪里见面？ ps:you asked is the word 会和，not 回合 会合：to meet; to assemble; to gang up; to join; to converge on; to rendezvous with the similar meaning as the 2ed use of 见面 我们在哪里会合？

会means some time in"time"回means "back".回合 "sth cost some time,and be recurring." 回合=go around, bout (in sports) and it also a PK and one competition one tournament. 会见 in physics"somebody important "meet sb(important or unimportant). 见面 is used widely in common life. meet, meet with.

会合, not 回合 ，it means you get toghter with someone 会见means you want to meet someone , or make an appointment with him , formal use 见面 informal

回合means you and others sure a time and where meet each other！会见actually style one country leaders meet another foreigner leaders！见面means meet ！