& Co. in French

Abbreviation of and company "X & Co." means X and their companions or associates, commonly as the proper name of a corporation but also informally as a group of people.

Abbreviation of company (often used as "& Co." (and company))

(shipping) Abbreviation of care of, used to identify an intermediary who is responsible for transferring a piece of mail between the postal system and the final addressee.

Together: the root word is done co-incidently.