A more thorough explanation:

Passage refers to:

1. The process of a legislative measure becoming a law.
2. The right or permission to travel through someone else's property.

For example:

• After months of debate, the passage of the new tax bill was celebrated by the majority party.
• The landowner granted the hikers passage through their property to reach the nearby waterfall.

The first example illustrates the first definition of passage, which refers to the process of a legislative measure becoming a law. The second example illustrates the second definition of passage, which refers to the right or permission to travel through someone else's property.