roughness vs crudeness

roughness and crudeness both are nouns.

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

As nouns, roughness and crudeness are synonyms defined as:

roughness (noun)	crudeness (noun)
harsh or severe speech or behavior	an impolite manner that is vulgar and lacking tact or refinement
a texture of a surface or edge that is not smooth but is irregular and uneven	an unpolished unrefined quality
the quality of being harsh or rough or grating to the senses	a wild or unrefined state
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