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

温暖[ondan] warmth
温暖化現象[ondankagenshou] greenhouse effect
寒暖計[kandankei] thermometer
珠暖簾[tamanoren] curtain made of strung beads
切り暖簾[kirinoren] short split entrance curtain

暖かい人[atatakaihito] warmhearted person
暖かさ[atatakasa] warmth
暖色[danshoku] warm colour
暖冬[dantou] mild winter
暖房[danbou] heating