| champion |
| chaperon(noun, guide, associate, friend, mate) |
| chaperone(noun, assistant) |
| clubber(noun, friend, partner, ally, fellow) |
| co-worker(noun, guide, associate, supporter, friend) |
| coadjutant(help, aid, associate, subordinate, representative) |
| comate(noun, guide, associate, friend, mate) |
| compatriot(noun, friend, partner, ally, fellow) |
| complement(noun, guide, associate, friend, mate) |
| concomitant(noun, guide, associate, friend, mate) |
| confrere |
| consort(noun, guide, associate, companion, friend) |
| convoy(noun, guide, associate, friend, mate) |
| copartner |
| cotenant |
| counterpart(noun, guide, associate, friend, mate) |
| cousin(noun, guide, associate, friend, mate) |
| cuz(noun, guide, associate, friend, mate) |
| double(noun, guide, associate, friend, mate) |
| employee(noun, assistant) |