choppiness vs roughness

choppiness and roughness both are nouns.

Word	Noun	Adjective	Verb	Adverb
choppiness	Yes	No	No	No
roughness	Yes	No	No	No

As nouns, choppiness and roughness are synonyms defined as:

choppiness and roughness: used of the sea during inclement or stormy weather

Other synonyms of choppiness include rough water.

choppiness (noun)	roughness (noun)
used of the sea during inclement or stormy weather	harsh or severe speech or behavior
	a texture of a surface or edge that is not smooth but is irregular and uneven
	the quality of being harsh or rough or grating to the senses
	an unpolished unrefined quality
	the formation of small pits in a surface as a consequence of corrosion
	used of the sea during inclement or stormy weather
	rowdy behavior