When it comes to finding comfortable sleeping arrangements, size does matter. King-size beds are a great option for individuals who want ample space to stretch out, turn around or sleep with a partner. However, in case you're on a hunt for alternatives, here are some synonyms. A queen-sized bed is a slightly smaller but still roomy sleeping option. A California king-size bed is longer and narrower than a standard king-size bed. Split king-size beds are two twin-sized mattresses put together, making them a versatile option. Finally, a super king-size bed is even larger than a standard king-size version, providing the ultimate in spacious sleeping arrangements.