Inherited Traits are traits that are passed down to offspring from parents.
Examples: hair color, eye color, size and shape of facial features, etc.
Instincts in Organisms are behaviors that do not require learning and are done in order to survive.
Examples: baby chicks pecking out of their shells, babies crying when they are hungry, etc.
Instinct in animals is something which is engrained into that animal when it is still developing and hasn't even been born yet. Instinct is thought to be hereditary, passed on from the parents so baby animals instinctively know how to get food from their parents. Although instinctive behaviour is behaviour at a very basic level, without natural instinct many animals simply would not survive as baby birds wouldn't know how to get food from their mother and beavers wouldn't know how to build a dam. Many animals rely on their instincts to sense approaching danger, or when searching for a mate.
Learned behaviors are behaviors that are learned throughout an organisms lifetime.
Examples: riding a bike, walking, sports, gymnastics, animals hunting skills, squirrels cracking nuts
Acquired Traits are traits that are acquired throughout an organisms lifetime.
Examples: length of hair, weight, height, sloths fur appears green over time due to algae growing in it