Here are the basic definitions of current, voltage and resistance:

CURRENT - is the flow of electrons round the circuit.

VOLTAGE - is the driving force that pushes the current round.

RESISTANCE - is anything in the circuit that slows the flow down.

There is a relationship between these three which is summarised as OHM'S LAW:

V=IR

voltage=Current x Resistance

So if you increase the voltage - then more current will flow, if the resistance is constant.

If you increase the resistance - then lass current will flow if voltage remains constant.