private life, personal life

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”)

guqin (Chinese seven-stringed zither)

Old English

antique clock, grandfather clock

old documents / (in palaeography) historical documents written to convey a specific intention between a sender and receiver; generally inclusive of written material through the mid-19th century

archaebacteria