When do I use the correct word in a sentence?

Let’s start with the definitions of each term.  The meaning according to Merriam Webster,

• advice – (noun) recommendation regarding a decision or course of conduct
• advise – (verb) to give advice to; to give information or notice to

A common mistake is using ‘advise’ as a noun, while ‘advice’ is used as a verb.  The use of these words is not interchangeable.

WRONG: I need your advise.

CORRECT: I need your advice.

WRONG: Please advice me.

CORRECT: Please advise me.