エリアeria

1. nounarea
   警察けいさつはそのエリアを封鎖ふうさした。↗

   The police have blocked off the area.

• Synonym区域くいきWrittenA formally designated, bounded zone, as in 「立入禁止区域」. More formal than 「エリア」, which is the everyday, modern-sounding word in speech.
• Synonym地域ちいきNeutralA region whose parts share geographic, economic or cultural features, as in 「地域社会」「地域差」. More formal than 「エリア」.
• Synonym領域りょういきWrittenTerritory, or an academic or specialist domain, as in 「専門領域」; stresses the scope something falls within. Written/formal prose.
• SynonymゾーンNeutralA loanword for a zone defined by its function, as in 「ストライクゾーン」; stresses functional division rather than area in general.
• Synonym地区ちくWrittenA district in the administrative or town-planning sense, as in 「住宅地区」. Written/formal prose.
• Synonym範囲はんいNeutralScope or limits, not tied to geography, as in 「出題範囲」.
• Synonym地帯ちたいWrittenA belt of land with one uniform character, as in 「工業地帯」「安全地帯」; stresses homogeneity. Written/formal prose.
• Synonym域いきWrittenA domain or level of attainment, mostly used as a suffix, as in 「専門の域」. Written/formal prose.
• Related区画くかくWrittenA divided plot or section of land, as in 「区画整理」; stresses partitioning. Written/formal prose.
• Related一帯いったいNeutralA whole contiguous stretch of land, as in 「この一帯」; stresses the surrounding area taken as one piece.
• Related方面ほうめんNeutralA direction or quarter, as in 「関西方面」; stresses orientation, and can also refer to an aspect of something.
• Related分野ぶんやNeutralA field of specialization, not a geographic area, as in 「研究分野」.

「エリア」 is the everyday, modern-sounding word for an area, as in 「サービスエリア」. Use 「区域」 for designated zones, 「地域」 for general regions, 「地帯」 for belts of like character, 「一帯」 for a surrounding stretch, and 「分野」 for fields of specialization.

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

1. 区域くいき、地域ちいき。