- Vein suggests a transient mood, often one manifested in speech, writing, action, etc. if I may speak in a serious vein for a moment
- Temper , in this comparison, applies to a mood characterized by a single, strong emotion, esp. that of anger my, you're in a nasty temper!
- Humor emphasizes the variability or capriciousness of the mood he wept and laughed as his humor moved him
- Mood is the broadest of these terms referring to a temporary state of mind and emphasizes the constraining or pervading quality of the feeling she's in a merry mood