vantage
A position that gives you a better view or understanding.
A vantage is a position or place that gives you a better view or clearer understanding of something. From a higher vantage point on a hill, you can see the whole neighborhood spread out below you, while someone standing at street level sees only the house directly in front of them.
Having a good vantage gives you an advantage. A basketball coach watches the game from the sidelines, where her vantage lets her see plays developing that individual players might miss. A lifeguard sits in a tall chair because that vantage point allows them to spot swimmers in trouble across the entire pool.
Vantage can also mean a mental or intellectual position. A historian studying the Civil War has the vantage of hindsight, able to see causes and consequences that people living through those events couldn't perceive. When you've experienced something yourself, you understand it from a different vantage than someone who only read about it.
You'll often see the phrase vantage point, which means essentially the same thing as vantage alone. Whether you're looking at a landscape, a problem, or a historical event, your vantage determines what you can see and understand.