drabness vs dowdiness

drabness and dowdiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
drabness	Yes	No	No	No
dowdiness	Yes	No	No	No

As nouns, drabness and dowdiness are synonyms defined as:

drabness and dowdiness: having a drab or dowdy quality; lacking stylishness or elegance

Other synonyms of drabness include homeliness.

drabness (noun)	dowdiness (noun)
having a drab or dowdy quality; lacking stylishness or elegance	having a drab or dowdy quality; lacking stylishness or elegance