companion >> /kəmˈpænjən/
Definition: [transitive verb] Accompany.
Example: he is companioned by a pageboy
Definition: [noun] A person or animal with whom one spends a lot of time or with whom one travels.
Example: his traveling companion
Definition: [noun] One of a pair of things intended to complement or match each other.
Example: a companion volume
Definition: [noun] A member of the lowest grade of certain orders of knighthood.
Example: a Companion of the Order of Canada