Both advise and advice relate to giving or receiving guidance or recommendations, but they are used differently.
Advise is a verb that means to offer counsel, recommend, or suggest what someone should do. It is an action word, used to describe the act of giving someone advice. For example: "I would advise you to take the job offer."
Advice, meanwhile, is a noun that describes guidance offered to someone, usually in the form of a suggestion or recommendation. It is what someone receives when they are advised. For example: "I appreciate your advice on how to handle this situation."
A good way to remember the difference between the two is that "advise" is the verb, while "advice" is the noun...