the electric motors in our hobby are usually given pet names or some people use mfr names for them; this is the easiest way to talk about them, use the mfr designation codes.
FC130 = pretty much your standard Scalextric motor, a short, metal can w/ a plastic endbell, sometimes called a "mabuchi" or "S-can"
FK130 = a closed can, short armature motor; FLY Racing motors found in BMW's, etc., also the Ninco NC-8 & their new "Sparker"
FK180 = a closed long can motor, often called a "Boxer", the majority of the Ninco & NSR motors
FF050 = small, closed can motor; Scalex newer F1 motor
Here are some links that may help:
Mabuchi
Slot car motor list