Advice /ədˈvɑɪs/ is a noun and means a suggestion about what someone should do. It is uncountable; Let me give you some advice: stay away from Margaret. Not: Let me give you an advice She gave him a lot of advice, but I don’t think he listened. Not: …a lot of advices … If we want to use advice in a countable way, then we use the phrase a piece of advice: I have two pieces of advice for you about the holiday. We use the verb advise /ədˈvɑɪz/ to mean ‘to give someone advice’: I strongly advise you to lose weight. They finally did what we advised.