Gail's brother, Luis, has an amiable personality.
Amiable is more often used to describe people and amicable to describe actions, gestures, etc.
Examples include: The next-door neighbors are amiable people.
The union and the company reached an amicable settlement in their contract dispute.
Because Juanita approached her new, amiable neighbors with an open mind and a plate of muffins, they were able to reach an amicable solution to building a new fence.
2. Relating to behavior between people that is pleasant and friendly, often despite a difficult situation: Jim's manner was perfectly amicable even though he lost the election as the new mayor of his town.
3. Pertaining to an agreement or decision that is achieved without disputes or disagreements: Few people have amicable divorces, but eventually, Joyce and Mark separated in a friendly way.