close: usually implies that something has been in some way open as well as unfinished: ~ the debate.   （open未决定未解决的not yet finally decided or settled，如the race is still wide open 赛跑胜负未定=anyone could win，如which route is better remains an open question哪条路线较好尚待决定=it is not decided，如the bug is still open软件缺陷还没有解决=it is not corrected）


end: conveys a strong sense of finality and implies a development which has been carried through: ~ed his life.


conclude: may imply a formal closing (as of a meeting): the service ~ed with a blessing.


finish: may stress completion of a final step in a process: after it is painted, the house will be ~ed.


complete: implies the removal of all deficiencies or a successful finishing of what has been undertaken: the resolving of this last issue ~s the agreement.   （undertake从事承担、开始从事承担means to do something that is important or difficult，如to undertake a task/journey/search承担任务/开始旅行/开始搜索，如a new creative undertaking从事创意工作或事业）


terminate: implies the setting of a limit in time or space: your employment ~s after three months.  （词根TERM表示极限界限limit,bound，比如term术语任期表示是有界限的，如determine确定决定的字面意思是"向下划界限"，如terminal 3/disease T3航站楼/晚期绝症，如interminable meeting/film/quarrel无休止的会议/电影/争吵，都来自Terminus古罗马掌管边界的神）


close结束停止: 表示有些事还没有解决或完成，end结束终结: 表示最终结束，即已历经了各发展阶段 ，conclude结束: 指正式结束如会议，finish结束完成: 指完成了最后一步，complete完成:  指排除所有缺陷，成功完成，terminate终止: 指设定时空极限


记忆方法:  1）首字母CECFCT想成FCC美国联邦通信委员会和TEC technology缩写<==结束      "结"从糸从吉，本义是用线绳草等条状物"把东西捆起来"。其中糸(mi)表示"丝线"，吉表示"台子上有食物"，即结表示把东西捆起来。"束"同样表示捆绑，字形上看，是用线绳草把木头捆起来，如束缚束皮带；引申为捆起来的东西，如一束鲜花花束光束。 "终"的本义是"把丝缠紧"，表示"结束"，其中冬表示四季的尽头    "完"表示"没有残缺"，字面意思是"房屋处于原本状态"，引申表示使东西不再有残缺，即可结束。"成"右部是一把宽口长柄大斧"戌"，左下有一直条长形物，很像是"用斧劈木以毕其功"的意思，如成功成语成婚善做善成

          2）结束的意思是停止做某事mean to bring or come to a stopping point or limit.