A member is an individual or organization that has been granted membership in a non-profit. Members usually get to vote at annual general meetings and are often responsible for selecting the directors of the non-profit. 

A director is an individual who has been elected or appointed to manage the non-profit society. Directors are usually also members of the society. Directors are collectively responsible for managing, or supervising the management of, the activities and internal affairs of the society. Sometimes directors are called board members, which can get confusing.