A tricky pair, especially if they sound the same to you! Advice is a noun (something you give), while advise is a verb (something you do).
The noun is spelt with -c- and pronounced with a sharp s, rather like a poisonous snake:
Can you give me some advice (advaaiSSS)?
When I want your advice I’ll ask for it.
The verb, on the other hand, is spelt with -s- and pronounced with a buzzing sound, rather like – yes, you guessed it – a busy bee:
I’d be grateful if you could advise (advaaiZZZZZ) me on this matter.
Ask Mary: she’ll be able to advise you.
© 2014 Baxter Publishing, Hilversum, The Netherlands