heaviness vs wideness

heaviness and wideness both are nouns.

Word	Noun	Adjective	Verb	Adverb
heaviness	Yes	No	No	No
wideness	Yes	No	No	No

As nouns, wideness is a hypernym of heaviness; that is, wideness is a word with a broader meaning than heaviness:

Other hypernyms of heaviness include broadness.

heaviness (noun)	wideness (noun)
the property of being comparatively great in weight	the property of being wide; having great width
used of a line or mark	unusual largeness in size or extent or number
unwelcome burdensome difficulty
an oppressive quality that is laborious and solemn and lacks grace or fluency
persisting sadness