Language universals refer to patterns or characteristics that are common to all languages around the world. Researchers in this field seek to identify and explain these universal features of language, which can include aspects of grammar, vocabulary, phonetics, and semantics. By studying language universals, linguists aim to uncover the fundamental principles that underlie human language and communication, as well as understand the ways in which languages differ from one another. This research area can provide valuable insights into the nature of language and the human mind.