How to say "expanse" in Japanese

• 広がりひろがりCommon
  nounCovers the common sense of 'expanse' as the spread or extent of something stretching out, such as sky, sea, or plains. This is the usual, natural choice in most contexts.
  彼かれは広ひろがりを見みせる汚職おしょくスキャンダルで摘発てきはつされた最初さいしょの国会議員こっかいぎいんです。↗

  He is the first national politician to be named in a widening corruption scandal.
• 広袤こうぼう
  nounA less common word for the expanse or spread of an area, especially land measured as vast extent. It is a learned, written-style term and seldom the word learners actually want for 'expanse'.

Use 「広がり」 for the everyday sense of something spreading out or its extent; 広袤 is a rare, literary word for vastness of land, seldom the word learners need.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 広がりひろがりspread
• 広袤こうぼうarea