Language universal is a term used to describe linguistic phenomena that are present across different languages and cultures. Some synonyms for this term include linguistic universals, cross-linguistic patterns, and language traits. These concepts refer to the basic structures and features that are common to all languages, including grammar, syntax, and semantics. Another synonym for language universal is linguistic regularity, which describes how particular sound patterns, grammatical rules, and vocabulary tend to be shared across languages. The existence of language universals suggests that there may be underlying cognitive and linguistic principles that are fundamental to human language acquisition and use, regardless of cultural or linguistic diversity.