Which to use when ...?

I think the easiest way to understand the difference between the two words is if I give you some sentences containing the words. I do know the difference between the words but the other day I typed advise instead of advice in a response and I was mortified as I am very particular about using the correct grammar! Can I ask your advice about how to resolve this problem? Can you advise me on how to resolve this problem? I asked for his advice on which was the best mobile phone for my needs and was satisfied with his response. I asked him to advise me about which mobile phone was best for my needs. I gave her advice on what to do with her insurance claim form. She asked me to advise her on completing her insurance claim form. I advised her that she should think carefully about completing her insurance claim form. I hope the above makes sense and that my advice hasn't confused you even more! LOL :)

What your intention.... .? Can be clearer? Thank you... .

Well, if you don't think of them as adjectives and verbs and think of placing them in sentences, it might become easier for you to remember. Remember advice is what you give or receive, and advise is what you do. In other words, if you advise somebody (do), you're giving them advice (give/receive). I hope that's clear to you, and helps you in your studies. Brightest Blessings and Good Luck.