Nouns

(n)injury, hurt, harm, traumaany physical damage to the body caused by violence or accident or fracture etc.; the condition of an injury
(n)damage, harm, impairmentthe occurrence of a change for the worse
(n)damage, harm, hurt, scathethe act of damaging something or someone

Verbs

(v)harmcause or do harm to“These pills won't harm your system”