Rhyme is a literary device where two or more words have similar ending sounds. It is commonly used in poetry and songs to create rhythm and enhance the musical quality of the language. Rhyme can occur at the end of lines, known as end rhyme, or within lines, called internal rhyme. There are different types of rhyme, such as perfect rhyme, where the sounds match exactly, and slant rhyme, where the sounds are similar but not identical. Rhyme helps to make language more engaging and memorable, often found in works by poets like Robert Frost and Emily Dickinson.