companion

companion /kəmˈpænjən/ noun
plural companions
companion
/kəmˈpænjən/
noun
plural companions
Britannica Dictionary definition of COMPANION
[count]
1 
a  : a person or animal you spend time with or enjoy being with
— sometimes used figuratively
b  : someone you are with
2 
a  : something that is meant to be used with something else — often + to
b  — used in the titles of books that give information about a particular subject
3 
: a person who is paid to live with and help someone who is older or sick