Intellectual property is an umbrella term for the various legal entitlements associated with certain names, literary works, recorded media, and inventions. The holders of such entitlements may exercise various exclusive rights in relation to the use of their intellectual property. The concept is controversial because it implies that intellectual works—so-called products of the mind—are analogous to physical property.
“Steep learning curve.”
Used to mean something is hard to learn, as in climbing a steep hill.