tameness vs dullness

tameness and dullness both are nouns.

Word	Noun	Adjective	Verb	Adverb
tameness	Yes	No	No	No
dullness	Yes	No	No	No

As nouns, dullness is a hypernym of tameness; that is, dullness is a word with a broader meaning than tameness:

tameness (noun)	dullness (noun)
the attribute of having been domesticated	lack of sensibility
the quality of being vapid and unsophisticated	without sharpness or clearness of edge or point
	the quality of lacking interestingness
	a lack of visual brightness
	the quality of being slow to understand