Bad Quarto: The earliest and considered less accurate version of Shakespeare's plays, characterized by its differences from later, more polished versions. Good Quarto: A version of Shakespeare's plays thought to be more accurate than the Bad Quarto, but not as refined as the First Folio. First Folio: The first collected edition of Shakespeare's plays published in 1623, regarded as the most authoritative and complete version. Soliloquy: A speech in which a character in a play speaks their thoughts aloud, often when they are alone, revealing their innermost thoughts to the audience. Textual variations: Differences in the texts of written works, which may include changes in wording, punctuation, and structure.