WordNet is a kind of online English language database. The words are grouped into synonyms and definitions are provided. One could say WordNet combines a dictionary and thesaurus.

Christiane Fellbaum has written:

'WordNet'

Someone who works to protect the environment from destruction or pollution. (WordNet)

"paradigm, epitome, image."

From Babylon, a computer program. More exactly, from WordNet 2.0.

There are actually more than 6. I believe they would be the cecum, ascending colon, hepatic flexure, transverse colon, colic (or splenic) flexure, descending colon, and sigmoid colon.