illegitimacy (being born out of wedlock)

a privately-owned ricefield, especially one under the historical 律令 (Ritsuryō) system

personal grudge

Kyūjitai form of 私鉄 (“private railway”)

sightseeing boat; tour boat; pleasure boat (ship)

a large warship using during the 16-17th century in Japan

steamship

a type of military boat used between the Warring States Period and the Edo Era

a spaceship (vehicle that flies through space, designed to fly with human onboard)

icebreaker (ship designed to break through ice)