The following are some of the jeKai entries that provide in-depth information on particular topics.
Terrestrial Life
A bilingual taxonomy of life with links to the biological entries in jeKai文字
A guide to Japanese writing systemsPitfalls
Words and phrases that often trip up learners of Japanese敬語
A general account of the main types of respect language in Japanese倒語
A guide to slang words formed by inverting the syllables of conventional words差別表現
A discussion of words that have been banned as discriminatoryA Slightly Askew Glossary of Japanese Baseball Terms
A comprehensive--and sometimes opinionated--account of terms used in Japanese baseball.