Speech and Language Disorder (SLD) is a term used to describe a variety of communication disorders that can affect children's ability to speak, understand, and use language effectively. These disorders can range from mild to severe and can impact a child's ability to communicate with others, leading to difficulties in social interactions, academic achievement, and overall quality of life. 

SLD can manifest in different ways, depending on the type and severity of the disorder. Some children may have difficulty producing speech sounds correctly or fluently, while others may struggle with understanding and using language appropriately. Still, others may have difficulty with social communication, such as nonverbal communication, turn-taking, and understanding social cues.