Oral development refers to the process by which individuals acquire the ability to communicate verbally. This development begins in infancy, as babies start to coo and babble, gradually forming sounds and words. By the age of two, most children can use simple sentences and have a vocabulary of around 200 words. As children grow, their oral skills continue to improve through social interactions and exposure to language. They learn to articulate sounds clearly, expand their vocabulary, and understand grammar rules. This progression is influenced by factors such as environment, parental interaction, and educational opportunities.