spinelessness vs subduedness

spinelessness and subduedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
spinelessness	Yes	No	No	No
subduedness	Yes	No	No	No

As nouns, subduedness is a hypernym of spinelessness; that is, subduedness is a word with a broader meaning than spinelessness:

spinelessness: the quality of lacking a strong character; an irresolute disposition
subduedness: a disposition to be patient and long suffering

Other hypernyms of spinelessness include meekness.

spinelessness (noun)	subduedness (noun)
the quality of lacking a strong character; an irresolute disposition	the property of lights or sounds that lack brilliance or are reduced in intensity
	a disposition to be patient and long suffering