contubernium

Etymology
From.

Noun

 * 1)  A squad of soldiers sharing a single tent, usually 6–8 men.
 * 2) attendance (in war)
 * 3) attendance, accompanying (of teachers, friends, etc.)
 * 4) marriage of slaves
 * 5) a dwelling together (referring to animals)
 * 6) a dwelling of different persons
 * 7)  household, company