The main difference
between advice vs advise is that “advise” (with an S) is a verb, which means to
recommend, or to give information to someone. On the other hand, “advice” (with
a C) is a noun: an opinion or recommendation offered as a guide to action. Advice is a noun that means guidance about what someone
should do. Advise is a verb that means to provide someone with guidance about
something. In other words, to advise someone is to
give them advice.