Anywhere where you have a number for each dimension to represent something, the collection of these numbers can be considered a vector. Position, speed and acceleration are the prime examples of vectors. It can in some cases also be practical to represent direction of facing as a vector.

For basic stuff it doesn't really matter whether or not you consider these numbers to be vectors, but if you want to do any kind of physics you ought to look into vector maths.

Anywhere where you have a number for each dimension to represent something, the collection of these numbers can be considered a vector. Position, velocity and acceleration are the prime examples of vectors. It can in some cases also be practical to represent direction of facing as a vector.

For basic stuff it doesn't really matter whether or not you consider these numbers to be vectors, but if you want to do any kind of physics you ought to look into vector maths.