庸 is built from the 广 (house on a cliff), 聿 (brush), and 用 components.
It reads ヨウ like 用, as do 踊 — learn 用 once and the family's reading comes with it.
A common word using 庸 is 凡庸 (ぼんよう), meaning “mediocre; ordinary”.
Kanji that look similar include 康, 鹿, 麻, and 座.
