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

木天蓼[matatabi] silver vine (Actinidia polygama)
蓼食う虫も好き好き[tadekuumushimosukizuki] there's no accounting for taste
紅蓼[benitade] water pepper (Polygonum hydropiper forma purpurascens)
仙蓼[senryou] Chloranthus glaber
大毛蓼[ooketade] kiss-me-over-the-garden-gate (species of smartweed, Polygonum orientale)

柳蓼[yanagidate] water pepper (Persicaria hydropiper)
藍蓼[aitade] dyer's knotweed (Persicaria tinctoria, used to produce indigo dye)
蓼科[tadeka] Polygonaceae (knotweed family of plants)
蓼藍[tadeai] dyer's knotweed (Persicaria tinctoria, used to produce indigo dye)