ill turn vs disservice

ill turn and disservice both are nouns.

Word	Noun	Adjective	Verb	Adverb
ill turn	Yes	No	No	No
disservice	Yes	No	No	No

As nouns, ill turn and disservice are synonyms defined as:

Other synonyms of ill turn include ill service.

ill turn (noun)	disservice (noun)
an act intended to help that turns out badly	an act intended to help that turns out badly