With Crowns, what does the “practice” button do?

Practice works exactly as it did before, but it no longer has a visual effect on your tree. This means that while practice helps you review and strengthen words that need it, it does not level up skills or unlock new content by doing it. This was the case before Crowns as well.

We want to replace this with something more satisfying in the future.

 

Related: Can I test out of individual skills?