summon: implies the exercise of authority and may imply a mandate, an imperative order, or urgency: ~ed by the court to appear as a witness.


call: may be used less formally and less emphatically for summon: the President ~ed Congress for a special session.


cite: implies a summoning to court usually to answer a charge: ~d to answer the charge of drunken driving.


convoke: implies a summoning to assemble, especially for deliberative or legislative purposes: ~d an assembly of the world's leading scientists.


convene: is somewhat less formal or emphatic than convoke: ~d the students in the school auditorium.   礼堂


muster: suggests a calling up of a number of things that form a group in order that they may be exhibited, displayed, or utilized as a whole for some purpose: ~ the troops for an inspection.


summon传唤: 表示正式传唤(exercise of authority行使职权)，如发布命令，情况紧急，call传唤: 正式程度和语气稍弱，cite传唤: 去接受诉讼，convoke召集: 传唤去集会，主要是考虑或立法，convene召集: 正式程度和语气稍弱，muster聚集: 集合汇聚作为整体使用展示


记忆方法: 1) 首字母SCCCCM想成CCCC四个中国人MS没事<==被传唤       每个词的解释都用到第一个词summon传唤(最后一个词muster除外用了call up)    
   
         2) 传唤的意思是要求出现mean to demand the presence of.首字母SCCCCM想成CCCC四个中国人MS没事<==被传唤