Typographical error

A typographical error is an unintended mistake in written or printed text, such as a misspelling, omitted character, or incorrect punctuation.

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Keyboard layout: The arrangement of keys on a keyboard, which affects how users enter characters. Neighboring keys and unfamiliar layouts can turn intended letters into mistaken keystrokes.
Misspelling: An incorrect written form of a word. A misspelling is one common form of typographical error.
Erratum: A notice identifying and correcting an error in a published work. An erratum records a mistake that escaped correction before publication.
Grammatical error: A violation of the grammatical rules or conventions of a language. A sentence can be grammatically faulty without containing a typing or printing mistake.
Autocorrection: Software that automatically replaces or modifies text it identifies as erroneous. Automatic substitutions can introduce errors even when the original typing was correct.
Typographical omission: The accidental absence of a letter, word, or other text element from a written passage. Omitted characters can leave a word malformed or change a sentence's meaning.
Corrigendum: A published correction to an error in a book, article, or other document. It provides a formal way to amend an error in an already released text.
Factual error: A claim that is incorrect about a fact or state of affairs. A text can be perfectly typed yet contain inaccurate information.
Spell checker: Software that detects possible spelling errors and may suggest corrections. It catches many misspellings but can miss correctly spelled words used unintentionally.
Transposition error: An error in which two or more elements appear in the wrong order. Reversed adjacent letters are a frequent typing mistake.