What term describes two unrelated adults who share the same living quarters?

The term "cohabitants" specifically refers to individuals who live together in the same residence without necessarily being in a romantic relationship. It captures the essence of two unrelated adults sharing a living space, emphasizing the arrangement of cohabitation. While "housemates" may seem appropriate, it typically implies a more casual or temporary living situation, often associated with shared rental agreements among friends or students. The other terms like "collaborators" and "companions" do not convey the specific living arrangement as effectively. "Collaborators" usually denotes individuals working together towards a common goal, while "companions" generally refers to friends or associates who spend time together, without any indication of shared living quarters. Therefore, "cohabitants" accurately describes the situation of two unrelated adults sharing the same living space.