Expressions used in Everyday Spoken English in Social and Professional contexts
To speak and discuss both mean to talk. When you discuss you usually speak with another person in order to share ideas or views. To say something 'in confidence' means that you expect the person you are talking to, to keep your discussion private or secret. You could ask someone if you could 'speak with them in confidence' or ask to 'discuss an issue' or 'discuss a matter' in confidence.