| accessory(noun, part, addition, decoration, supplement) |
| adjunct(noun, part, addition, accessory, attachment) |
| appurtenance(noun, part, addition, accessory, decoration) |
| concomitant(noun, person, part, guide, associate) |
| companion(noun, person, rest, match, balance) |
| complement(noun, part, guide, match, associate) |
| sidekick(noun, person, guide, associate, individual) |
| addition(noun, rest, match, balance, extra) |
| appendage(noun, part, addition, accessory, attachment) |
| supplement(noun, part, rest, match, balance) |
| addendum(noun, attachment, supplement, adjunct) |
| attachment(noun, part, addition, accessory, decoration) |
| reinforcement(noun, support, help, extra, addition) |
| support(noun, help, assistance) |
| part(noun, music, performer) |
| attendant(noun, person, part, guide, associate) |
| augmentation(noun, part, rest, match, balance) |
| backup(noun, support, help, assistance) |
| escort(noun, guide, associate, friend, nurse) |
| coincidence(noun, conjunction, agreement, correspondence, concurrence) |