Образуйте существительные от следующих глаголов:
refer, increase, define, move, experience, exchange, lose, confide, describe, control, attempt, tend, develop, classify, associate, employ, accumulate

refer -reference  increase - increase define - definition move - movementexperience - experience exchange - exchange  lose - loss confide - confidence describe - description control - control, controller attempt - attempt tend - tender develop - development  classify – class, classification associate - association employ – employer, employee, (un)employment  accumulate – accumulation, accumulator