We've been talking about the fact that there's a big difference between the word and the meaning. For example, the word could change. The word changes but the meaning is the same. The meaning is fixed. The words can change, but the meaning stays the same.
Meanings are static and words can change to identify the meanings.
This difference identifies the distinction between what is called a type and a token. The meaning of the word is the type. It's the thing itself. The type doesn't change. The meaning or the type is a universal.