com·pan·ion 1 
(kəm-pănyən)
(kəm-pănyən)n.
1.
a. A person who accompanies or associates with another; a comrade.
b. A domestic partner.
2. A person employed to assist, live with, or travel with another.
3. One of a pair or set of things; a mate.
tr.v. com·pan·ioned, com·pan·ion·ing, com·pan·ions
To be a companion to; accompany.
[Middle English compaignyon, from Old French compaignon, from Vulgar Latin *compāniō, *compāniōn- : Latin com-, com- + Latin pānis, bread; see pā- in the Appendix of Indo-European roots.]