inadvertence vs omission

inadvertence and omission both are nouns.

Word	Noun	Adjective	Verb	Adverb
inadvertence	Yes	No	No	No
omission	Yes	No	No	No

As nouns, omission is a hypernym of inadvertence; that is, omission is a word with a broader meaning than inadvertence:

inadvertence: an unintentional omission resulting from failure to notice something
omission: neglecting to do something; leaving out or passing over something

inadvertence (noun)	omission (noun)
the trait of forgetting or ignoring your responsibilities	a mistake resulting from neglect
an unintentional omission resulting from failure to notice something	neglecting to do something; leaving out or passing over something
	any process whereby sounds or words are left out of spoken words or phrases
	something that has been omitted