Every week I will demonstrate an example of poor English where a different word is used from the one intended. Sometimes this creates a grammatically incorrect sentence. Unfortunately, the mistake is usually so pervasive that we all do it and such errors are usually made by those who should know better – journalists working for national or global media outlets such as newspapers and television.
Practice / Practise
This is yet another one where I didn’t know there was a difference – or I assumed the difference was really only in an American vs British spelling. That’s not the case though. If anything, it is a British-English convention that grammar-monster says is slowly being adopted by the colonies.
Practice is a noun and practise is a verb – so the former describes an actual thing and the latter describes an action. “A man works at a Dental Practice where he practises dentistry.”
The grammar monster link I provided above has an interesting trick to remember which is which too:
Try using the word preparation (or lessons) instead of practice. If the sentence still makes sense, then practice is almost certainly correct.
(This trick works because practice is a noun, just like the words preparation and lessons.)