what do these words mean
How difference ?
abfahren = to leave (in a vehicle)
anfahren = to start driving / to get into motion after standing still
jemanden anfahren = to run into somebody (in a vehicle)
verfahren = to proceed in a certain way
sich verfahren = to lose one's way (in a vehicle)
wegfahren = to drive away from somewhere
These are the most common meanings of these words. You can find more (often metaphorical) meanings on dict.leo.org.