lebab (Hebrew #3824)
the heart (as the most interior organ); used also like 3820
KJV usage: + bethink themselves, breast, comfortably, courage, ((faint), (tender-)heart((-ed)), midst, mind, X unawares, understanding.
Pronounce: lay-bawb'
rak (Hebrew #7390)
tender (literally or figuratively); by implication, weak
KJV usage: faint((-hearted), soft, tender ((-hearted), one), weak.
Pronounce: rak