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'
rakak (Hebrew #7401)
to soften (intransitively or transitively), used figuratively
KJV usage: (be) faint((-hearted)), mollify, (be, make) soft(-er), be tender.
Pronounce: raw-kak'
Origin: a primitive root