The electrons flow is termed electron current. Electrons flow from the negative end to the positive end. Conventional current behaves as if positive charge carriers cause current to flow. Conventional current flows from the positive terminal to the negative terminal. The conventional current can be defined as charge per unit time transported in a certain direction. In conventional current, the type of charge carrier is irrelevant.
In conventional current, the flow of electrons is assumed as a flow of protons in the opposite direction. Possibly the simplest way to think about this is to pretend as if the movement of positive charge carriers constituted current flow.