Intellectual
Part of speech: adjective
Definition: Belonging to, or performed by, the intellect; mental; as, intellectual powers, activities, etc. Endowed with intellect; having the power of understanding; having capacity for the higher forms of knowledge or thought; characterized by intelligence or mental capacity; as, an intellectual person. Suitable for exercising the intellect; formed by, and existing for, the intellect alone; perceived by the intellect; as, intellectual employments. Relating to the understanding; treating of the mind; as, intellectual philosophy, sometimes called "mental" philosophy.
Part of speech: noun
Definition: An intelligent person, someone interested in intellectual matters. The intellect or understanding; mental powers or faculties.
Example sentence: The most important thing about intellectual property vs. creative expression is that copyright law was created not to stifle creativity but to encourage creativity.
Intelligence
Part of speech: noun
Definition: Capacity of mind, especially to understand principles, truths, facts or meanings, acquire knowledge, and apply it to practice; the ability to learn and comprehend.An entity that has such capacities.Information, usually secret, about the enemy or about hostile activities.A political or military department, agency or unit designed to gather such information.