impalement vs inhuman treatment

impalement and inhuman treatment both are nouns.

Word	Noun	Adjective	Verb	Adverb
impalement	Yes	No	No	No
inhuman treatment	Yes	No	No	No

As nouns, inhuman treatment is a hypernym of impalement; that is, inhuman treatment is a word with a broader meaning than impalement:

impalement: the act of piercing with a sharpened stake as a form of punishment or torture
inhuman treatment: a cruel act; a deliberate infliction of pain and suffering

Other hypernyms of impalement include cruelty.

impalement (noun)	inhuman treatment (noun)
the act of piercing with a sharpened stake as a form of punishment or torture	a cruel act; a deliberate infliction of pain and suffering