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From Wikipedia:
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College (Latin collegium) is a term most often used today to denote an educational institution. More broadly, it can be the name of any group of colleagues (see, for example electoral college, College of Arms, College of Cardinals). Originally, it meant a group of persons living together under a common set of rules (con- = "together" + leg- = "law" or lego = "I choose"); indeed, some colleges call their members "fellows". The precise usage of the term varies among English-speaking countries. |
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A balloon is a flexible bag filled with a type of gas, such as helium, hydrogen, nitrous oxide or air. Early balloons were made of dried animal bladders. Modern balloons can be made from materials such as rubber, latex, polychloroprene or a nylon fabric. Some balloons are purely decorative, while others are used for specific purposes such as meteorology, medical treatment, military defense, or transportation. A balloon's properties, including its low density and relatively low cost, have led to a wide range of applications.
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College vs Cleaning, 
