Answers (3)
There is a very slight difference between the two:
Instinct is the fixed pattern of behaviour in response to certain situation. Like if a touch a hot pan your hand will move away from it in no time. So this function is there, by default. You can say that this feature is stored in the memory of your muscles there is no role of your consciousness.
Where as, Intuition is the ability to understand something instinctively, without the need for conscious reasoning.
Like when you enter a dark room or suppose you are standing in a queue of roller coaster, the closer your chance comes you start feeling excited and you starting thinking of what is going to happen when you are sitting in it. This feeling and day dreaming is intuition. You sit on the coaster where you feels it would be better for you, this is intuition. You actually don't know that this seat in the coaster is good or bad you or not, you just feel that it is, this is intuition.
You start to feel something without actually feeling it.
That is the sort of question that is unlikely to get a straight answer because people just won't admit that they don't know. You should go to dictionaries to find what words mean, and even dictionaries won't always agree on a single meaning.
Like this:
www.google.com/#q=instinct+vs+intuition&*
As per the understanding of the words, instinct is more a response in animals, that automatic reaction, and intuition is more about human intelligence, an inner experience that has no reasoning. Therefore, the meanings will differ based on worldly understanding and spiritual understanding. In spiritual understanding, instinct may be reminiscence of rebirth that makes a dog swim, that makes a dog react, makes a child drink its mother milk. Spiritually, intuition is realization, it is enlightenment. Therefore, it will differ from a material understanding and a spiritual understanding of the terms.