4 Old HSK word(s): ☊习惯 ** A ☊惯 ** C ☊惯例 ** D ☊惯用语 ** D
见惯* * 娇惯* * 看不惯* * 看惯* * 司空见惯* * 用惯* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

用 use, employ, apply, operate / use
惯 habit, custom / habitually, usual

Hsk Characters: 惯 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
惯 60EF + 慣 + + habit, custom / habitually, usual 心， 忄 贯 Heart 贯 (DURCH_ETWAS_HINDURCH) guan4 +

Korean:

慣 + 惯 버릇 관 (a habit) or 익숙할 관 (to be used to, familiar with)
2 NHSK word(s): 习惯* 3 xi2 guan4habit/ custom/ usual practice/ to be used to/ CL:個|个[ge4] 惯例* 6 guan4 li4conventional
KOREAN6000 word(s):
0 KOREAN 2500 New HSK words):
0 KOREAN Sentence(s):