"The long tradition of professional connoisseurship has resulted in the development of a bewildering universe of specialist terminology. In certain cases, it must be admitted, there was self-indulgent proliferation of words relating to some minute feature....In fact, no clear distinction can be made between one term and its closest neighbor in meaning."—from the Introduction to Kanzan Sato's
The Japanese Sword, A Comprehensive Guide, translated and with an introduction by Joe Earle (New York: Kodansha America, Inc., 1983)