S: (n) associate (associate%1:18:00::) (a person who joins with others in some activity or endeavor) "he had to consult his associate before continuing"
S: (n) member (member%1:18:00::), fellow member (fellow_member%1:18:00::) (one of the persons who compose a social group (especially individuals who have joined and participate in a group organization)) "only members will be admitted"; "a member of the faculty"; "she was introduced to all the members of his family"