collective noun

(grammar) noun that is singular in form but can refer to a number of people or things and agree with a plural verb 集合名词（形式上为单数而意为复数的名词, 要求与复数动词一致）: `Flock' and `committee' are collective nouns. flock和committee都是集合名词.

collaboration, collaborative, collaborator, collage, collapse, collapsible, collar, collar-bone, collar-stud, collate, collateral, collation, colleague, collect, collected, collectedly, collection, collective, collective bargaining, collective farm, collective ownership, collectively, collectivism, collectivist, collectivization, -isation, collectivize, -ise, collector, colleen, college, collegiate, collide, collie, collier, colliery, collision, collision course, collocate, collocation, colloquial, colloquialism,