Difference between Advice & Advise, Practice & Practise, Licence & License etc.
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Advice, Practice, Licence etc. (those with c) are nouns and Advise, Practise, License etc. are verbs.

One way of remembering this is that the word ‘noun’ comes before the word ‘verb’ in the dictionary; likewise ‘c’ comes before ‘s’, so the nouns are ‘practice,licence,advice’ and the verbs are ‘practise,license,advise’.