It's hard to relate to someone who has such wild/extreme 'mood swings'. [=someone whose mood changes very quickly]
She turned down the lights and lit a candle to create a more romantic 'mood'. [='atmosphere']
I'm sorry. I'm just not 'in the mood to talk'. [=I do not want to talk to anyone right now]
(..) only once. The night O-Ren assumed power over the crime council. The man who seems bound and determined to break the mood is Boss Tanaka. And what Boss Tanaka thinks is... Boss Tanaka! What's the meaning of this outburst? (..)2003 Kill Bill: Vol. 1