Often implies there's an anticipated event or moment that everything is moving towards. The team's training sessions are a build up to the big championship game.
Pro Tip 2/3
Creating Tension
Used to describe how excitement or suspense is deliberately increased over time. The movie's plot builds up to an unexpected twist.
Pro Tip 3/3
Sequential Progression
Implies a series of events or actions that logically lead to a particular point or outcome. Her arguments built up to a powerful conclusion.