兄 is built from the 口 and 儿 (legs) components.
It belongs to a phonetic family with 況 and 競 — they share the 兄 component and the reading キョウ.
A common word using 兄 is 兄 (あに), meaning “(my) older brother (humble)”.
Kanji that look similar include 加, 台, 右, and 号.