偏芯[henshin] eccentricity (in mechanics, electronics, etc.)
燈芯[toushin] (lamp) wick
帯芯[obishin] thick obi sash
摘芯[tekishin] thinning (buds and branches)
芯地[shinji] padding

替え芯[kaeshin] spare lead
鉛筆の芯[enpitsunoshin] lead of a pencil
硬の芯[kounoshin] hard pencil lead
林檎の芯[ringonoshin] core of an apple

誹諧[haikai] haikai
誹謗[hibou] slander
誹議[higi] criticism
誹る[soshiru] to slander
誹り[soshiri] slander

譏誹[kihi] abuse
誹謗中傷[hibouchuushou] slander
誹毀[hiki] defamation
誹風[haifuu] style of a haikai or haiku poem

誹諧[haikai] haikai
俳諧師[haikaishi] writer of haikai poems
半諧音[hankaion] assonance
諧声[kaisei] vocal harmony
諧調[kaichou] melody

諧謔[kaigyaku] joke
滑稽諧謔[kokkeikaigyaku] smooth-talking and humorous
俳諧の連歌[haikainorenga] haikai (humorous or vulgar renga poetry)
諧謔を弄する[kaigyakuworousuru] to crack jokes
諧和[kaiwa] gentle mutual affection