WHOLE CHARACTER
康kāng
health; well-being; free of illness; sound; abundant; moderately prosperous (小康); empty; hollow
康 is health and ease: 健康 'health', 康复 'to recover', 小康 'comfortably well-off'.
ZDIC header: 象形; the detailed source makes 康 the original graph of 穅 (chaff; the 说文 account reads 禾/米 under 庚声). No old grain part is visible today, so the modern shape is shown honestly: a shelter-style frame over a fused inner piece.
OUTER FRAME: THE SHELTER-STYLE FRAME
广guǎng
wide; broad
As a left radical it is a bound shelter-side form; the standalone modern meaning is separate.
In 康: outer frame: the shelter-style frame The written frame only; the standalone word guǎng is not taught here.
INNER: THE FUSED INNER PIECE, WRITTEN LIKE 隶
隶lì
to attach to; subordinate (also a script name)
A standalone character (lì); where a similar inner shape appears in another character, that page states whether it is only a look-alike.
In 康: inner: the fused inner piece, written like 隶 A visual look-alike only; not taught as the word lì, and no historical role is claimed.