Companion
# Companion

Companion may refer to:

## Relationships

### Currently

* Any of several interpersonal relationships such as friend or acquaintance
* A domestic partner, akin to a spouse
* Sober companion, an addiction treatment coach
* Companion (caregiving), a caregiver, such as a nurse assistant, paid to give a patient one-on-one attention

### Historically

* A concubine, a long-term sexual partner not accorded the status of marriage
* Lady's companion, a historic term for a genteel woman who was paid to live with a woman of rank or wealth
* Companion cavalry, the elite cavalry of Alexander the Great
* Foot Companion, the primary type of soldier in the army of Alexander the Great
* Companions of William the Conqueror, those who took part in the Norman conquest of England
* Muhammad's companions, the Sahaba, the friends who surrounded the prophet of Islam

## Film and television

* Companion (Doctor Who), a character who travels with the Doctor in the TV series Doctor Who
* Companion (Firefly), a type of courtesan and entertainer in the TV series Firefly
* The Companion (film), a 2015 Cuban film
* The Companion, a South Korean film of 1984
* The Companion, a 1994 Universal Television film

## Literature

* "The Companion" (fairy tale), a Norwegian fairy tale
* "The Companion" (short story), a story by Agatha Christie in her 1932 collection The Thirteen Problems
* The Companion, an 1828 literary journal published by Leigh Hunt

## Music

* Companion, a 1999 album by Patricia Barber
* "Companion", a song by Nikki Lane from the 2017 album Highway Queen
* Companions (album), by Raphe Malik, 2002
* Companions (EP), by Mixtapes, 2011

## Other uses

* Bearhawk Companion, an American homebuilt aircraft design, with two seats in side-by-side configuration
* Companion 21, an American sailboat design
* Companion (ship), an architectural feature of ships
* Companion animal, a pet animal kept for companionship
   * Companion parrot, a pet parrot that interacts with its owner
* Companion matrix, a matrix with a specific relation to its characteristic polynomial p
* Companion planting, planting of different crops in close physical proximity
* "Companion series", a sister show in television
* Companion star, a star in a binary system
* Companion weapon, an object held in the non-sword hand while fencing
* A handbook or guide book or compendium e.g. Star Trek: Deep Space Nine Companion or The Oxford Companion to Music
* A member of a Holy Royal Arch chapter
* A rank within many state-awarded orders
