A classifier, or measure word, is a word or morpheme used in some languages together with a noun, principally to enable numbers and certain other determiners to be applied to the noun. They are not regularly used in English or other European languages, although they parallel the use of words such as "piece(s)" and "head" in phrases like "three pieces of paper" or "thirty head of cattle". They are a prominent feature of East Asian languages, where it is common for all nouns to require a classifier when being quantified—for example, the equivalent of "three people" is often "three "classifier" people". A more general type of classifier (classifier handshapes) can be found in sign languages.