Exploration is the act of searching or traveling around a terrain (including space, see space exploration) for the purpose of discovery of resources or information. Exploration occurs in all non-sessile animal species, including humans. In human history, its peak is arguably seen during the Age of Discovery for Europe's contact with the rest of the world, and major explorations after the Age of Discovery for scientific exploration in the modern era.

The term may also be used metaphorically, for example persons may speak of exploring the internet, sexuality, etc. In scientific research, exploration is one of three purposes of empirical research (the other two being description and explanation). Exploration is the attempt to develop an initial, rough understanding of some phenomenon.

Hockey is a family of sports in which two teams play against each other by trying to maneuver a ball or a puck into the opponent's goal using a hockey stick. In many areas, one sport (typically field hockey or ice hockey) is generally referred to simply as hockey.

The first recorded use of the word "hockey" is found in the text of a royal proclamation issued by Edward III of England in 1363 banning certain types of sports and games.

"[m]oreover we ordain that you prohibit under penalty of imprisonment all and sundry from such stone, wood and iron throwing; handball, football, or hockey; coursing and cock-fighting, or other such idle games."

The word hockey itself is of unknown origin, although it is likely a derivative of hoquet, a Middle French word for a shepherd's stave. The curved, or "hooked" ends of the sticks used for hockey would indeed have resembled these staves.

Games played with curved sticks and a ball can be found in the histories of many cultures. In Egypt, 4000-year-old carvings feature teams with sticks and a projectile, hurling dates to before 1272 BC in Ireland, and there is a depiction from c.600 BC in Ancient Greece where the game may have been called kerētízein or kerhtízein (κερητίζειν) because it was played with a horn or horn-like stick(kéras, κέρας) In Inner Mongolia, China, the Daur people have been playing beikou, a game similar to modern field hockey, for about 1,000 years.