course

In school, a course is a class in a specific subject.

Example: The science course was very difficult.

A course is the path that something follows in space or in time.

Example: During the course of the evening, things went from bad to worse.

For a meal, a course is one part of a meal such as dessert.

Example: We usually do not eat a meal with nine courses.

Some games are played on a course.

Example: The game of golf is played on a golf course.

If something courses, it runs or flows through something.

Example: Blood courses through the veins and arteries in our bodies.