今春[konshun] this spring
昨春[sakushun] last spring
三春[sanshun] three spring months
思春期[shishunki] puberty
春たけなわ[harutakenawa] spring is in full swing

春めく[harumeku] to become spring-like
春一番[haruichiban] first storm of spring
春夏秋冬[shunkashuutou] spring, summer, autumn (fall) and winter
春画[shunga] shunga

陰陽道[onmyoudou] Onmyoudou
紫陽花[ajisai] hydrangea (Hydrangea macrophylla)
斜陽[shayou] setting sun
重陽[chouyou] Chrysanthemum Festival (the 9th day of the 9th lunar month) (one of the five annual festivals)
太陽[taiyou] sun

太陽光線[taiyoukousen] sunlight
太陽光発電[taiyoukouhatsuden] solar power (generation)
太陽暦[taiyoureki] solar calendar
半陰陽[haninyou] hermaphrodite