A sonnet is a 14-line poem that typically follows a specific rhyme scheme and meter, often written in iambic pentameter. This form of poetry allows for the exploration of various themes, emotions, and ideas, often reflecting on love, beauty, or mortality. Sonnets are traditionally divided into two main types: the Petrarchan (or Italian) sonnet and the Shakespearean (or English) sonnet, each with its unique structure and thematic focus.