noun, noun which may take the genitive case particle 'no'
ordinariness; everydayness; mundanity
Refers to the quality or state of being ordinary, routine, or part of daily life. Often used in abstract or philosophical contexts to contrast with the extraordinary.
芸術は日常性を超えたところにある。
Art lies beyond the ordinary.
彼の作品は日常性の中に美
His works find beauty in the everyday.
平凡 means 'commonplace' or 'mediocre', often with a slightly negative nuance. 日常性 is neutral and refers to the state of being routine rather than lacking distinction.
Compound of 日常 (にちじょう, 'daily, everyday') and the suffix 性 (せい, '-ness, -ity'), forming an abstract noun meaning 'everydayness' or 'ordinariness'.