Word Boundaries

You already now the beginning ^ and the end $ anchors.
They match either the beginning or the end of a text or line (with the m flag).

But if you want to anchor to a word boundary?
That’s where the \b anchor comes in.

The \b anchor matches the position between a word character and a non-word character.

For example:
\ba matches every word that starts with an a
a\b matches every word that ends with an a

The opposite also exists:
\B matches the position between two characters that are not a word boundary