How to sign: a period of indeterminate length (usually short) marked by some action or condition
"he was here for a little while"; "I need to rest for a piece"; "a spell of good weather"; "a patch of bad weather";
Similiar / Same: while, patch, piece
Categories: time
Within this category: cold spell, hot spell, snap
How to sign: a psychological state induced by (or as if induced by) a magical incantation
Similiar / Same: trance, enchantment
Categories: mental state, psychological state
Within this category: fascination, possession