Some analyses consider nonce words to fall broadly under neologisms, which are usually defined as words relatively recently accepted into a language's vocabulary; other analyses do not.

Types of nonce words

A variety of more specific concepts used by scholars falls under the umbrella of nonce words, of which overlap is also sometimes possible:
*nonsense word: a nonce word that is meaningless unless it follows the phonology of a particular language
**nonword:

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