nouns
the fullness of a tone of voice
"there is a musky roundness to his wordiness"
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 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 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