committedness vs seriousness

committedness and seriousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
committedness	Yes	No	No	No
seriousness	Yes	No	No	No

As nouns, seriousness is a hypernym of committedness; that is, seriousness is a word with a broader meaning than committedness:

Other hypernyms of committedness include earnestness, serious-mindedness, sincerity.

committedness (noun)	seriousness (noun)
the trait of sincere and steadfast fixity of purpose	the trait of being serious
	the quality of arousing fear or distress
	an earnest and sincere feeling