I have 'mixed emotions' [='mixed feelings'] about doing this. [=I'm not sure if I want to do this or not]
He's always found it hard to express (his) 'emotions'. [=to show his feelings]
The defendant showed/displayed no 'emotion' when the verdict was read.
(..) MAGGIE: What do you mean? I mean, what happens physically? Well. Tear ducts operate on a normal basis to lubricate and protect the eye. When you have an emotion, they overact and create tears. Why? Why do they overact? I don't know. Maybe... Maybe emotion becomes so intense... (..)1998 City of Angels