roundness

nouns

the fullness of a tone of voice
"there is a musky roundness to his wordiness"
is derived from
the quality of being round numbers
"he gave us the results in round numbers, but their roundness didn't affect the point he was making"
is derived from
is a type of (narrower)
the property possessed by a sum or total or indefinite quantity of units or individuals
"he had a number of chores to do"; "the number of parameters is small"; "the figure was about a thousand"
the property possessed by a line or surface that is curved and not angular
is derived from
antonym
is a type of (narrower)
any spatial attributes (especially as defined by outline)
"he could barely make out their shapes"
the bodily property of being well rounded