Self-confidence (2.6) +Expression of confidence (5.0) Actually, she is a person who lacks self-confidence. But often show others that they are a confident person.
Confidence (2.6)+Performance of Confidence (5.0). In fact, she is a person who lacks confidence, but often shows others that she is a confident person.
Self-confidence (2) 6)+ self-confidence (5. 0) It is true that she is a person who lacks self-confidence, but she always shows others that she is a confident person.