What is it called when two people share a house?

What it called when two people share a house in Australia, it is called share house, flatshare, housemates, or co-living, with two people sharing 2 to 3 bed house 100 to 150 sqm each paying rent $250 to $500 per week per room plus bills $50 to $100 per week, total rent $500 to $1,000 per week for house $500K to $1M value, with shared kitchen $15K to $50K, bathroom $10K to $30K and living areas. When two people share house, it is called share house or flatshare in Australia and UK, housemates or roommates in US, and co-living for modern branding, with two unrelated people sharing 2 to 3 bed house 100 to 150 sqm, each with own bedroom $250 to $500 per week and shared common areas kitchen, bathroom, living and laundry, total rent $500 to $1,000 per week for 2 bed house $500K to $800K value split $250 to $500 each per week plus bills $50 to $100 each for electricity, water, internet $200 to $400 per month total $50 to $100 per person. For example, 2 bed house 120 sqm $600 per week rent in Melbourne, 2 persons share each $300 per week plus bills $50 = $350 per week per person versus renting 1 bed unit $400 to $600 per week saving $50 to $250 per week. If two people are couple sharing house, it is called de facto or couple, with joint tenancy both names on lease. If two households share house with separate tenancies, it is called dual occupancy if separate kitchen and bathroom requiring council approval $10K to $20K. So when two people share house it is called share house, flatshare, housemates, roommates or co-living, with two people sharing 2 to 3 bed house $500 to $1,000 per week total rent $250 to $500 each plus bills $50 to $100, sharing kitchen and bathroom, common for affordability saving $50 to $250 per week versus 1 bed unit $400 to $600.