砕身 （サイシン） working so hard as to ruin one's body, struggling to the point of crushing oneself

玉砕 （ギョクサイ） honourable defeat, honorable defeat, honourable death, honorable death, death without surrender, trying but being utterly beaten, being completely rejected when professing one's love

破砕 （ハサイ） crushing (into pieces), smashing, cracking, breaking up

砕身 （サイシン） working so hard as to ruin one's body, struggling to the point of crushing oneself

砕く （くだく） to break, to smash