地盤|じばんjiban[0]heiban (flat)

1. nounground; crust (earth); bed (gravel, river, etc.)
2. nounfoundation (building, etc.); base
3. nounconstituency; power base; support (electoral); footing; foothold

• RelatedベースNeutralLoanword for a base or foundation, also a baseball base; 「地盤」 points to a building's foundation or a sphere of influence.
• Related基地きちNeutralA military base or base of operations; 「地盤」 instead stresses a sphere of influence or the ground under a building.
• Related拠点きょてんNeutralA base of activity or branch site, as in 「海外拠点」; 「地盤」 stresses influence or votes rather than a place you operate from.
• Related本拠ほんきょWrittenWritten word for a headquarters or home base; 「地盤」 stresses the area one's influence covers.
• Related根拠地こんきょちWrittenWritten term for an operational base, often military; 「地盤」 stresses votes or a sphere of influence.
• Related根城ねじろNeutralA stronghold or base that a person or group regularly operates from or stays at, sometimes with an underworld flavor.
• Related根拠こんきょNeutralA basis or grounds, as in 「根拠がない」; 「地盤」 stresses a physical or political base.
• Related本拠地ほんきょちNeutralA home ground or headquarters, e.g. a ballclub's home stadium; 「地盤」 stresses a constituency or vote base.
• Related立脚地りっきゃくちWrittenWritten word for a standpoint or footing in abstract argument; 「地盤」 usually means a concrete foundation or a constituency.
• Related立脚点りっきゃくてんWrittenA standpoint or starting point of an argument, in written prose; 「地盤」 stresses actual power or influence.

Use 「地盤」 for a building's foundation or a politician's constituency and vote base, as in 「地盤沈下」. For a base of activity say 「拠点」; for a headquarters or home base 「本拠地」; for grounds or a basis 「根拠」; for a standpoint 「立脚点」.

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

1. 大地だいちの表面ひょうめん。地殻ちかく。
2. 土台どだい。下組しもぐみ。
3. （比喩的ひゆてき）勢力圏せいりょくけん。活動かつどうするために拠点きょてんとする場所ばしょや範囲はんい。