ill turn vs ill service

ill turn and ill service both are nouns.

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

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

Other synonyms of ill turn include disservice.

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