classifying
51Igneous rock — Geologic provinces of the world (USGS)   Shield …
52Monopoly — This article is about the economic term. For the board game, see Monopoly (game). For other uses, see Monopoly (disambiguation). Competition law Basic concepts …
53Musical instrument — A musical instrument is a device created or adapted for the purpose of making musical sounds. In principle, any object that produces sound can serve as a musical instrument it is through purpose that the object becomes a musical instrument. The… …
54Race (classification of human beings) — The term race or racial group usually refers to the concept of categorizing humans into populations or groups on the basis of various sets of characteristics. [http://www.physanth.org/positions/race.html AAPA Statement on Biological Aspects of… …
55Taxonomy — is the practice and science of classification. The word comes from the Greek Polytonic|τάξις , taxis (meaning order , arrangement ) and Polytonic|νόμος , nomos ( law or science ). Taxonomies, or taxonomic schemes, are composed of taxonomic units… …
56Game classification — is the classificiation of games, forming a game taxonomy. Many different methods of classifying games exist. Physical education There are four basic approaches to classifying the games used in physical education: [cite book|title=Developmental… …
57Metalloid —   13 14 15 16 17   2  B Boron …
58Musical instrument classification — At various times, and in various different cultures, various schemes of musical instrument classification have been used. The most commonly used system in use in the west today divides instruments into string instruments, wind instruments and… …
59Unitary group — In mathematics, the unitary group of degree n , denoted U( n ), is the group of n times; n unitary matrices, with the group operation that of matrix multiplication. The unitary group is a subgroup of the general linear group GL( n , C).In the… …
60Hypersexuality — Man crazy , Nympho and Sexual dependency redirect here. For the 1997 American novel, see Man Crazy. For the 2005 house music album, see Nympho (album). For the 2003 Bolivian film, see Sexual Dependency (film). Hypersexuality is extremely frequent …
