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

収繭[shuuken] cocoon crop
二つ繭[futatsumayu] double cocoon
繭を掛ける[mayuwokakeru] to spin a cocoon
繭価[mayuka] price of a cocoon
繭玉[mayudama] New Year's decoration with cocoon-shaped cakes

繭紬[kenchuu] pongee (unbleached silk)
繭糸[kinuito] silk thread
春繭[harumayu] spring cocoon crop
山繭蛾[yamamayuga] Japanese oak silkmoth (Antheraea yamamai)