Advise Vs. Advice

The difference between the two is - one is verb, other is noun. Hence, one needs to use them properly.

Advise: The word advise is verb, and it means act of advising or giving out suggestions. 

Example: Sheila advised Robert not to eat too much butter, as it is not good for health.

Advice: Advice is a piece of suggestion given by a person to another person.

Example: Sheila's advice of reducing butter intake helped Robert lose some weight.