tweediness vs inelegance

tweediness and inelegance both are nouns.

Word	Noun	Adjective	Verb	Adverb
tweediness	Yes	No	No	No
inelegance	Yes	No	No	No

As nouns, inelegance is a hypernym of tweediness; that is, inelegance is a word with a broader meaning than tweediness:

tweediness: an informal, homely, outdoor look characteristic of those who wear tweeds
inelegance: the quality of lacking refinement and good taste

tweediness (noun)	inelegance (noun)
looseness or roughness in texture (as of cloth)	the quality of lacking refinement and good taste
an informal, homely, outdoor look characteristic of those who wear tweeds