they had to invent kingdom hall, the word church has pagan connotations. it comes from circee(sp) an ancient goddess of trances and medicines. funny but true.
According to Wikipedia, at least, the word "church" is derived from the Greek kyrios ("Lord") by way of the Germanic, not from the goddess Circe. However, the JWs still couldn't use the term despite its lack of pagan origins, because then they wouldn't be different.