交 is built from the 亠 (lid) and 父 components.
It belongs to a phonetic family with 効, 較, 絞, and 郊 — they share the 交 component and the reading コウ.
A common word using 交 is 交番 (こうばん), meaning “police box”.
Kanji that look similar include 坑, 市, 抗, and 京.