基 is built from the 其 (that / winnowing basket) and 土 components.
It belongs to a phonetic family with 期, 旗, 棋, and 欺 — they share the 其 component and the reading キ.
A common word using 基 is 基 (もと), meaning “basis”.
Kanji that look similar include 期, 棋, 欺, and 碁.