Meaning

• A piece of furniture, usually flat and soft, on which to rest or sleep.

  "My cat often sleeps on my bed. I keep a glass of water next to my bed when I sleep."

• A place, or flat surface or layer, on which something else rests or is laid.

  "The meats and cheeses lay on a bed of lettuce."

• (heading) A layer or surface.

Meaning

• Senses relating to a bed as a place for resting or sleeping.

• Senses relating to a bed as a place or layer on which something else rests or is laid.