Глагол  Исполнитель - Кто?  Существительное - Что? Прилаг.-Какой?

achieve    achiever                       achievement       (un)achievable            

benefit      benefactor                  benefit                  beneficial

create       creator                         creation creativity              (un)creative

develop      developer              development developing, developmental

discover    discoverer               discovery

improve    improver                improvement                 improving

invent       inventor                 invention           (un)inventive

produce    producer    product, production  (un)productive

solve       solver            solution     (un)solved,(in)soluble