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]
(..) -Life's better with company. -Yeah. Everybody needs a co-pilot. -That was a nice touch. -Thanks. -So, what's the mood like out there? -It's not good. -She's pretty pissed? -She's upset. What should I do? Go get her. (..)2009 Up in the Air