Practise and practise are often used incorrectly in written English. Native speakers often confuse the two different spellings of this words, but the difference is quite simple. Let's take a look.
In American English, practice is always spellt with a c. Regardless of whether it is a verb or a noun.
- Tessa has softball practice on Tuesdays and Thursdays. (noun)
- If you want to inmrpove, you have to practice every day. (verb)
In British English, practice is spelt with a c when it is a noun.
- Tessa has two practices a week. (noun)
When practise is a verb, it is spelt with s.
- They are very good because they practise every day. (verb)