notion

noun

1. a vague idea in which some confidence is placed

   noun.cognition

   Synonyms belief feeling impression opinion

   Source: WordNet 3.0

2. a general inclusive concept

   noun.cognition

   Source: WordNet 3.0

3. an odd or fanciful or capricious idea

   noun.cognition

   Examples

   The theatrical notion of disguise is associated with disaster in his stories.

   Synonyms whim whimsey whimsy

   Source: WordNet 3.0

4. (usually plural) small personal articles or clothing or sewing items

   noun.artifact

   Examples

   Buttons and needles are notions.

   Source: WordNet 3.0