This document categorizes and defines different types of exceptionalities or disabilities that can affect learners. It discusses categories such as specific cognitive or academic difficulties like learning disabilities, ADHD, and speech/communication disorders. It also covers social/emotional and behavioral exceptionalities including autism, mental retardation, and emotional/conduct disorders. Additionally, it outlines physical disabilities and health impairments as well as sensory impairments involving vision, hearing, and giftedness. The document provides details on the characteristics and features of each exceptionality.