Practice or Practise

Practice is the noun.
(with -c)

Practise is the verb.
(with -s)

  • You need more practice.
    (with -c)
  • You should practise more.
    (with -s)
  • It takes a lot of practice to be good at anything.
  • You must keep practising to be good at anything.

More examples:

  • advice & advise
  • device & devise
  • licence & license
  • prophecy & prophesy