康
コウ, かん, こ, みち, やす, やすし

ease, peace

JLPT1 G4 S11 F760

庚# (firm husk) + four marks suggesting scattered rice → firm, taut husk of a grain plant → *healthy*; *sound* (← firm and taut). 康 was devised to replace 庚 after 庚 acquired its borrowed meanings.

[Full Kanji Etymology List]