Classical mechanics
The position of an object tells you where it is. For example, if you live in New York City and your friend lives in Seattle, your friend has a position of 3,876 kilometers (2,408 miles) west from you. But your friend would say that you have a position of 3,876 kilometers (2,408 miles) east from them instead. This is because position depends on where "position zero" or the origin is. For you, the origin is in New York City, but for your friend, the origin is in Seattle. So we make sure to always say where the origin is when we talk about position.