0 Old HSK word(s):
诀* * 口诀* * 妙诀* * 秘诀* * 要诀* *

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

要 necessary, essential / necessity
诀 take leave of, bid farewell

Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
诀 8BC0 + 訣 + + take leave of, bid farewell 言 决 Words 决 jue2 +

Korean:

訣 + 诀 이별할 결 (say goodbye, separate) or 비결 결 (a secret trick)
0 NHSK word(s):
KOREAN6000 word(s):
0 KOREAN 2500 New HSK words):
0 KOREAN Sentence(s):