How about this: emotionality is the mental/psychological faculty that enables us to be more or less emotional and to express our emotions. It is that which is one the same level with rationality and its opposite. It is a rather abstract entity whereas our emotions are the raw material of which our emotional self is built - hatred, fury, rage vs. love, compassion, fear etc. Emotionality is the code/software/system, emotion(s) the content. Is this making sense to anyone but me? I was reluctant using "emotionality" just minutes ago but I now think it has its justification.