Bilingualism is the ability to use, or the regular use of, two languages with advanced proficiency and nearly equal fluency in each language. Bilingualism is broadly classified into simultaneous bilingualism, in which a person is introduced to two languages concurrently, and sequential bilingualism, in which a person is introduced to a second language after having been introduced to a first language by the nature of acquisition process. Simultaneous bilingualism generally refers to childhood bilingualism as a result of ...