This is the 5186th most frequent Polish word.
przód
Front.
In this sentence, 'przód' refers to 'the front of an object', specifically the front part of the car where the engine is located.
Samochód ma silnik z przodu.
The car has its engine in the front.
Here, 'przodem' (derived from 'przód') is used to indicate 'in a forward orientation' relative to another person or object.
Stań przodem do mnie.
Stand facing me.
In this context, 'przód' again means 'the front', but it specifies the frontal aspect of an approaching vehicle.