ill service vs ill turn

ill service and ill turn both are nouns.

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

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

Other synonyms of ill service include disservice.

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