Companion

Companion may refer to:

• A friend or acquaintance you associate yourself with
• Companion (caregiving), a nurse assistant or similar professional who assists a patient one-on-one
• 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 star, a star in a binary star system
• Companion weapon, an object held in the non-sword hand while fencing
• Muhammad's companions, the Sahaba
• Companion cavalry, Alexander the Great's elite cavalry
• Foot Companion, the primary type of soldier in Alexander the Great's army
• Lady's companion, a genteel woman who acted as a companion for woman of rank or wealth
• Sober companion, an addiction treatment coach
• Companion planting, planting of different crops in close physical proximity
• 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 domestic partner
• A concubine
• An intelligent conversational agent as in the Companions Project
• An companion in the Islamic religion: Sahabah