The noun mood has 3 senses (first 2 from tagged texts)
1. (14) temper, mood, humor, humour -- (a characteristic (habitual or relatively temporary) state of feeling; "whether he praised or cursed me depended on his temper at the time"; "he was in a bad humor")
2. (6) climate, mood -- (the prevailing psychological state; "the climate of opinion"; "the national mood had changed radically since the last election")
3. mood, mode, modality -- (verb inflections that express how the action or state is conceived by the speaker)