A second language is any language learned after a person's first language, known as their native language. People often learn a second language for various reasons, such as travel, work, or personal interest. Common second languages include Spanish, French, and Mandarin. Learning a second language can enhance cognitive abilities and improve communication skills. It can also provide cultural insights and open up opportunities for social interaction and professional advancement. Many educational systems offer language courses to help students acquire these skills, making second language learning an important aspect of global communication.