A high-frequency word is a lexical item that occurs relatively often in a defined corpus of spoken or written language, as determined by its frequency of occurrence within that dataset ^[1]. Word frequency is a quantitative property commonly expressed as a raw count or normalized rate, such as occurrences per million words, and the classification of a word as high-frequency depends on the reference corpus, sampling conditions, and threshold used ^[1]. In linguistic and psycholinguistic research, high-frequency words are distinguished from low-frequency words by their relative occurrence rates, while frequency measures may be affected by whether different inflected forms are counted separately or grouped under a common lemma. The term therefore describes a corpus-relative frequency category rather than an intrinsic or universally fixed property of a word.