stylishness vs modishness

stylishness and modishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
stylishness	Yes	No	No	No
modishness	Yes	No	No	No

As nouns, stylishness and modishness are synonyms defined as:

Other synonyms of stylishness include chic, chichi, chicness, last word, smartness, swank.

stylishness (noun)	modishness (noun)
elegance by virtue of being fashionable	elegance by virtue of being fashionable