forgetfulness vs unawareness

forgetfulness and unawareness both are nouns.

Word	Noun	Adjective	Verb	Adverb
forgetfulness	Yes	No	No	No
unawareness	Yes	No	No	No

As nouns, unawareness is a hypernym of forgetfulness; that is, unawareness is a word with a broader meaning than forgetfulness:

forgetfulness: unawareness caused by neglectful or heedless failure to remember
unawareness: unconsciousness resulting from lack of knowledge or attention

Other hypernyms of forgetfulness include unknowingness.

forgetfulness (noun)	unawareness (noun)
tendency to forget	unconsciousness resulting from lack of knowledge or attention
unawareness caused by neglectful or heedless failure to remember