亜科[aka] subfamily
医科[ika] medical science
医科大学[ikadaigaku] medical school
家庭科[kateika] home economics
科名[kamei] family name

科する[kasuru] to inflict
科学[kagaku] science
科学院[kagakuin] science institute
科学技術[kagakugijutsu] science and technology

水芹[seri] Java water dropwort (Oenanthe javanica)
芹科[serika] Apiaceae (parsley family of plants)
浜芹[hamazeri] Cnidium japonicum (species of umbellifer)

毒芹[dokuzeri] Mackenzie's water hemlock (Cicuta virosa)
三葉芹[mitsubazeri] mitsuba (Cryptotaenia japonica)