harm vs scathe

harm and scathe both are nouns.

Word	Noun	Adjective	Verb	Adverb
harm	Yes	No	Yes	No
scathe	Yes	No	No	No

As nouns, harm and scathe are synonyms defined as:

Other synonyms of harm include damage, hurt.

harm (noun)	scathe (noun)
the act of damaging something or someone	the act of damaging something or someone
the occurrence of a change for the worse
any physical damage to the body caused by violence or accident or fracture etc.; the condition of an injury

harm (verb)	scathe (verb)
cause or do harm to