inadvertency vs unmindfulness

inadvertency and unmindfulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
inadvertency	Yes	No	No	No
unmindfulness	Yes	No	No	No

As nouns, inadvertency and unmindfulness are synonyms defined as:

inadvertency and unmindfulness: the trait of forgetting or ignoring your responsibilities

Other synonyms of inadvertency include heedlessness, inadvertence.

inadvertency (noun)	unmindfulness (noun)
the trait of forgetting or ignoring your responsibilities	the trait of forgetting or ignoring your responsibilities