ill-fated vs ill-omened

ill-fated and ill-omened both are adjectives.

Word	Noun	Adjective	Verb	Adverb
ill-fated	No	Yes	No	No
ill-omened	No	Yes	No	No

As adjectives, ill-fated and ill-omened are synonyms defined as:

Other synonyms of ill-fated include doomed, ill-starred, unlucky.

ill-fated (adjective)	ill-omened (adjective)
marked by or promising bad fortune	marked by or promising bad fortune