Specific Learning Disability (SLD) is an umbrella term that encompasses a range of learning difficulties, such as dyslexia, dyscalculia and attention deficit hyperactivity disorder (ADHD). Synonyms for SLD can vary depending on the specific type of learning disability being referred to. For instance, "dyslexia" is often used interchangeably with "reading disability," a subtype of SLD that primarily affects a person's ability to read and comprehend written language. Similarly, the terms "math disability" or "mathematics disorder" are often used in place of "dyscalculia," which pertains to difficulties with math and numerical concepts. Other synonyms for SLD may include "learning difficulty," "learning disorder," and "specific learning difference".