There's a slight problem with the article, because the two basic definitions of the noun, "small body of water" and "collective effort" are not etymologically related at all. The first is from Old English and beyond that its origins are disputed. The other meaning comes from Latin pullus "young of an animal" via French poule "hen, stake", related to the Indo-European root pau- "few, little". How is this best solved?
I found etymology for pool. http:// books.google.com/ books?id=hsRISNLSSHAC&pg=PT654&lpg=PT654 184.108.40.206 22:56, 21 August 2013 (UTC)