A classifier, in linguistics, sometimes called a measure word, is a word or morpheme used in some languages to classify the referent of a countable noun according to its meaning. In languages that have classifiers, they are often used when the noun is being counted or specified (i.e., when it appears with a numeral or a demonstrative). Classifiers are not used in English (for instance, "people" is a countable noun, and to say "three people" no extra word needs to be added), but are common in East Asian languages (where the equivalent of "three people" is often "three classifier people") and in sign languages.
Classifier systems should not be confused with noun classes, which often categorize nouns in ways independent from meaning, such as according to morphology.
Other articles related to "classifier, classifiers":
... The concept of noun classifieris distinct from that of noun class ... Classifiersystems typically involve 20 or more classifiers(separate lexemes that co-occur with the noun) ... One hundred classifiersare common, and 400 are attested ...