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

オムツ気触れ[omutsukabure] diaper rash
お気の毒[okinodoku] pitiful
御天気[otenki] weather
利かん気[kikanki] daring
さり気ない[sarigenai] nonchalant

哀れ気[awarege] sad
悪気[warugi] ill will
圧搾空気[assakukuuki] compressed air
圧縮空気[asshukukuuki] compressed air
圧電気[atsudenki] piezoelectricity