The term 'fit together snugly' can be represented by two crossword solutions: 'NEST' (4 letters) and 'nested' (6 letters). Both words refer to the act of arranging objects or people in a way that they fit together closely. Nesting is a common behavior among birds, who build nests to protect their eggs and young. It is also used to describe the arrangement of objects such as boxes, containers, or drawers, which are placed inside each other to save space.