thickness vs wideness

thickness and wideness both are nouns.

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

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

Other hypernyms of thickness include broadness.

thickness (noun)	wideness (noun)
the dimension through an object as opposed to its length or width	the property of being wide; having great width
resistance to flow	unusual largeness in size or extent or number
used of a line or mark
indistinct articulation