悪水[akusui] undrinkable water
井戸水[idomizu] well water
一衣帯水[ichiitaisui] (being separated only by a) narrow strip of water
一水[issui] current (of water)
溢水[issui] inundation

飲水量[insuiryou] amount of drinking
飲料水[inryousui] drinking water
烏の行水[karasunogyouzui] quick bath
雲水[unsui] itinerant priest
塩化水素[enkasuiso] hydrogen chloride

爬う[hau] to creep
爬虫[hachuu] reptile
爬虫類[hachuurui] reptiles
掻爬[souha] curettage
爬行性[hakousei] sluggishness

水爬虫[tagame] Lethocerus deyrollei (species of giant water bug)
哺乳類型爬虫類[honyuuruigatahachuurui] mammal-like reptile
爬虫両生類学[hachuuryouseiruigaku] herpetology
爬龍[haarii] Okinawan dragon boat race
爬行[hakou] creeping

御田[oden] oden
塩田[enden] saltpan
凹田[kubota] rice field in a low place
下田[geden] worn-out rice land
我田引水[gadeninsui] seeking one's own interests

刈田[karita] harvested rice field
乾田[kanden] dry paddy field
桑田[souden] mulberry plantation
秋田県[akitaken] Akita prefecture (Tohoku area)
上田[jouden] high rice field

ランブル鞭毛虫[ranburubenmouchuu] giardia (flagellate protozoan)
ランブル鞭毛虫症[ranburubenmouchuushou] giardiasis
いも虫[imomushi] hornworm (caterpillar of a hawk moth)
益虫[ekichuu] useful insect
円虫類[enchuurui] round worms

夏虫[natsumushi] summer insect
蛔虫[kaichuu] roundworm (Ascaris lumbricoides)
害虫[gaichuu] harmful insect
鈎虫[kouchuu] hookworm
寄生虫[kiseichuu] parasite

月と鼈[tsukitosuppon] like chalk and cheese (superficially similar, but completely different) (the moon and a turtle shell are both round, but they are otherwise completely different)
鼈甲[bekkou] tortoiseshell (of the hawksbill turtle)
鼈甲色[bekkouiro] amber (colour, color)
石鼈[hizaragai] chiton (any marine mollusk of the class Polyplacophora)
鼈甲蜂[bekkoubachi] spider wasp

田鼈[tagame] Lethocerus deyrollei (species of giant water bug)
鼈茸[suppontake] common stinkhorn (Phallus impudicus)
鼈甲細工[bekkouzaiku] article of tortoise shell
鼈甲飴[bekkouame] hard candy