Language acquisition is the process by which humans acquire the capacity to perceive and comprehend language, as well as to produce and use
words and
sentences to communicate. Language acquisition is one of the quintessential human traits, because
non-humans do not communicate by using language. Language acquisition usually refers to
first-language acquisition, which studies infants' acquisition of their native language. This is distinguished from
second-language acquisition, which deals with the acquisition (in both
children and adults) of additional languages.