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]
(..) but we're not trying to find North, are we? We should drop canvas, sir. She can hold a bit longer. What's in your head that's put you in such a fine mood? We're catching up. Time to go, poppet. RAGETTI: Ho! Ho! Ho! Ho! Ho! Ho! Dead men tell no tales. (..)2003 Pirates of the Caribbean: The Curse of the Black Pearl