Devices:
Resistor
Diode / LED
Capacitor
Transistor
Inductor

Voltage, Current, Resistance:
V = IR
V voltage (volts, V)
I current (amperes or amps, A)
R resistance (ohms, ½)

Power (watts, W)
P = VI

Polarized?
resistor
resistor pack
diode
LED
transistor
capacitor
integrated circuit