Companions could be called: associate, chum, comrade, crony, fellow, mate, or informally: buddy or pal.
Associate (in business)
Mate is one...
Another word for work partner is colleague.
lover
Groom.
partner, ally
Mate
Divine Complement
No, the noun 'partner' is a common noun, a general word for any person who shares or is associated with another in some action or endeavor; a general word for the spouse of someone; a word for any partner of any kind.A proper noun is the name or title of a specific person, place, or thing; for example, Partner Colorado Credit Unionin Arvada, CO or Partner Place in Bloomington, IL.The word 'partner' is also a verb: partner, partners, partnering, partnered.
accessory, accomplice, associate, collaborator, colleague, friend, helper, partner
The base word for "partner" is "part."
Partner has two syllables: part-ner.
Some choices: partner, helper, backup, aide, accomplice, supporter, collaborator, accessory
A work partnener is also a colegue