横恋慕[yokorenbo] illicit love
失恋[shitsuren] disappointed love
はつ恋[hatsukoi] first love
色恋[irokoi] sensual love
道ならぬ恋[michinaranukoi] illicit love affair

悲恋[hiren] blighted love
恋い初める[koisomeru] to begin to love
恋い忍ぶ[koishinobu] to live on love
恋慕う[koishitau] to miss

哀情[aijou] sadness
愛情[aijou] love
遺伝情報[idenjouhou] genetic information
恩情[onjou] compassion
温情[onjou] warm heart

下情[kajou] condition of the common people
我情[gajou] selfishness
各情報[kakujouhou] all information
感情[kanjou] emotion
感情移入[kanjouinyuu] empathy