Base
Basis, Foundation
noun
きばん
初歩 (しょほ) Basics, Rudiments, Elements, ABCs
基本 (きほん) Foundation, Basics
基本的 (きほんてき) Fundamental, Basic, Standard
基盤 (きばん) Base, Basis, Foundation
根本 (こんぽん) Root, Basis, Foundation
根拠 (こんきょ) Basis, Grounds
基礎 (きそ) Foundation, Fundamentals
礎 (いしずえ) Foundation, Cornerstone
基盤 means Base as in Foundation, not Army Base.