How to sign: a person who contributes to the fulfillment of a need or furtherance of an effort or purpose
"my invaluable assistant"; "they hired additional help to finish the work";
Similiar / Same: assistant, helper, help
Categories: worker
Within this category: accomplice, aide, attendant, coadjutor, dental assistant, deputy, dresser, event planner, facilitator, girl Friday, hatchet man, instrument, labor coach, mannequin, model, paraprofessional, powder monkey, prompter, right-hand man, secretary, sidesman, subordinate, underboss, water boy, whipper-in
How to sign: someone who supports or champions something
Similiar / Same: sponsor, patron
Categories: benefactor, helper
Within this category: angel, godfather, godparent, guarantor, patroness, tower of strength