癒 is built from the 疒 (sickness), 俞 (hollow out (in 輸·愉)), and 心 components.
It belongs to a phonetic family with 輸, 諭, and 愉 — they share the 俞 component and the reading ユ.
A common word using 癒 is 癒着 (ゆちゃく), meaning “adhesion; conglutination”.
Don't confuse it with 諭, 輸, and 愉.
