harm vs detriment

harm and detriment both are nouns.

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

As nouns, detriment is a hyponym of harm; that is, detriment is a word with a more specific, narrower meaning than harm:

Other hyponyms of harm include hurt, deformation, distortion, ladder, ravel, run.

harm (noun)	detriment (noun)
the act of damaging something or someone	a damage or loss
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)	detriment (verb)
cause or do harm to