Companion
/kəmˈpænjən/
noun
A friend, acquaintance, or partner; someone with whom one spends time or keeps company
“His dog has been his trusted companion for the last five years.”
A person employed to accompany or travel with another.
The framework on the quarterdeck of a sailing ship through which daylight entered the cabins below.
verb
To be a companion to; to attend on; to accompany.
To qualify as a companion; to make equal.