障 is built from the 阝 (hill (left) / village (right)) and 章 components.
It reads ショウ like 章, as do 彰 — learn 章 once and the family's reading comes with it.
A common word using 障 is 故障 (こしょうする), meaning “breakdown”.
Kanji that look similar include 際, 隠, 墜, and 隔.