本間

1. noun, takes の, na-adjective, usually in kana, Kansai-ben truth; reality

ほんけん

1. noun measure of length corresponding to 6 shaku (approx. 1.82 meters)

1. noun official size of a tatami mat for measuring room size (esp. a Kyoto-size tatami mat)
2. music basic rhythm (in traditional Japanese music)
3. archaic room (in a brothel) of a prostitute of the highest rank