advice / advise
The noun versus the verb, and the preposition that follows the noun.
Advice is the noun. Advise is the verb. After the noun, to names the person addressed and for names the purpose or the people served: advice to the new hire, advice for a job interview.
Examples
Use The auditor’s advice spared the firm a costly penalty.
Use I advise waiting a week.
Use The surgeon’s advice to the residents was blunt.
Avoid The auditor’s advise spared the firm a costly penalty. (Advise is the verb. The noun is spelled advice.)