What is a made-up, nonsense word commonly referred to as in language assessment?

A made-up, nonsense word is commonly referred to as a neologism in language assessment. Neologisms are newly created words or expressions that may not have an established meaning in the language. In the context of language assessment, neologisms can be used to evaluate a person's language skills, particularly their creativity, understanding of phonological structures, and ability to produce novel language forms. Assessing neologisms can help identify how individuals process language and their level of cognitive flexibility in language use.

Other terms like idioms, palindromes, and homophones have specific meanings that do not align with the concept of made-up words. Idioms are expressions with meanings that are not deducible from the individual words; palindromes are words or phrases that read the same backward as forward; and homophones are words that sound the same but have different meanings. Therefore, these options do not fit the description of nonsense words used in language assessment.