• 甲こう

  carapace, shell

• 甲板かんぱん

  deck (of a ship)

• 甲種こうしゅ

  A-grade, first-class

• 甲乙こうおつ

  first and second, A and B

• 甲斐かい

  result (that makes an act worthwhile), worth (in doing something), value, effect, use, benefit, avail

• 装甲そうこう

  armoring, armouring, armor, armour

• 甲状腺こうじょうせん

  thyroid (gland)

• 甲高いかんだかい

  high-pitched, shrill

• 甲子園こうしえん

  Koshien Stadium (baseball park in Nishinomiya, Hyōgo Prefecture)

• 遣り甲斐やりがい

  value in doing something, feeling that something is worth doing, rewarding feeling, sense of satisfaction

• 甲きのえ

  first sign of the Chinese calendar

• 甲かん

  treble range (in Japanese music), high note

• 甲虫こうちゅう

  beetle

• 甲信こうしん

  Kōshin (region)

• 甲丸こうまる

  dome shape

• 甲兵こうへい

  arms, war, armed warrior

• 甲鉄こうてつ

  armor, armour, armor plate, armour plate

• 甲声かんごえ

  sharp high voice

• 甲冑かっちゅう

  armor and helmet

• 甲皮こうひ

  carapace, shell, crust

• 甲府こうふ

  Kōfu (city in Yamanashi)

• 甲巡こうじゅん

  armored cruiser, armoured cruiser

• 甲殻こうかく

  carapace, shell, crust

• 甲卒こうそつ

  armored warrior, armoured warrior

• 甲板こういた

  top board (of a table, counter, etc.), surface

• 甲高こうだか

  (feet) with a high instep, having a high instep

• 甲斐かい

  Kai (former province located in present-day Yamanashi Prefecture)

• 甲矢はや

  arrow with feathers that curve to the left (the first of two arrows to be fired)

• 甲子きのえね

  Wood Rat (1st term of the sexagenary cycle, e.g. 1924, 1984, 2044)

• 甲虫カブトムシ

  rhinoceros beetle (esp. the Japanese rhinoceros beetle, Trypoxylus dichotomus)

• 甲戌きのえいぬ

  Wood Dog (11th term of the sexagenary cycle, e.g. 1934, 1994, 2054)

• 甲午きのえうま

  Wood Horse (31st term of the sexagenary cycle, e.g. 1954, 2014, 2074)

• 甲寅きのえとら

  Wood Tiger (51st term of the sexagenary cycle, e.g. 1914, 1974, 2034)

• 甲申きのえさる

  Wood Monkey (21st term of the sexagenary cycle, e.g. 1944, 2004, 2064)

• 甲辰きのえたつ

  Wood Dragon (41st term of the sexagenary cycle, e.g. 1964, 2024, 2084)

• 甲羅こうら

  shell (of a crab, tortoise, etc.), carapace, plastron

• 甲斐がい

  result (that makes an act worthwhile), worth (in doing something), value, effect, use, benefit, avail

• 胸甲きょうこう

  sternum, breastplate, plastron

• 機甲きこう

  armour (e.g. tank), armor

• 華甲かこう

  60th birthday, age of 60

• 鉄甲てっこう

  iron armor (armour), iron helmet

• 遁甲とんこう

  type of astrology

• 鈍甲どんこ

  dark sleeper (species of sleeper goby, Odontobutis obscura)

• 背甲はいこう

  carapace

• 手甲てっこう

  covering for the back of the hand and wrist

• 介甲かいこう

  crust-like shell

• 全甲ぜんこう

  all-A (student)

• 亀甲きっこう

  tortoiseshell, tortoise shell

• 挂甲けいこう

  armor made from small iron plates bound by leather cords (from Kofun to Nara periods)

• 腕甲わんこう

  brassard (armor), brassart, rerebrace, vambrace