necessity (quality or state of being necessary, unavoidable, or absolutely requisite)

unnecessary

needlessness

necessary evil

old documents / (in palaeography) historical documents written to convey a specific intention between a sender and receiver; generally inclusive of written material through the mid-19th century

bizarre/unsettling text of unclear origin and often of a radical/shocking nature

place or building where stores public records; archive

妊娠: pregnancy, conception

深夜: midnight / 新家: new house

信也, 真或, 真矢, 真也, 慎也, 伸也, 晋哉, 申也: a male given name / 真哉, 信哉, 紳矢: a male given name / 新屋, 新谷: a surname