shamefulness vs ignominiousness

shamefulness and ignominiousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
shamefulness	Yes	No	No	No
ignominiousness	Yes	No	No	No

As nouns, shamefulness and ignominiousness are synonyms defined as:

shamefulness and ignominiousness: unworthiness meriting public disgrace and dishonor

Other synonyms of shamefulness include disgracefulness.

shamefulness (noun)	ignominiousness (noun)
unworthiness meriting public disgrace and dishonor	unworthiness meriting public disgrace and dishonor