roundness

Knot is a related term of roundness.

As a verb knot

is (knyta).

As a noun roundness is

the quality of being round.

Roundness is a related term of bow.

As nouns the difference between roundness and bow

is that roundness is the quality of being round while bow is a weapon made of a curved piece of wood or other flexible material whose ends are connected by a string, used for shooting arrows or bow can be a gesture, usually showing respect, made by inclining the head or bending forward at the waist or bow can be (nautical) the front of a boat or ship.

As a verb bow is

to play music on (a stringed instrument) using a bow or bow can be to bend oneself as a gesture of respect or deference.

Protuberance is a synonym of roundness.

As nouns the difference between protuberance and roundness

is that protuberance is lump, protuberance while roundness is the quality of being round.

As nouns the difference between soundness and roundness

is that soundness is the state or quality of being sound while roundness is the quality of being round.

As nouns the difference between roundness and aroundness

is that roundness is the quality of being round while aroundness is (philosophy) the quality of being around.

As nouns the difference between roundness and rotundness

is that roundness is the quality of being round while rotundness is the property of being rotund. fatness, largeness.

As nouns the difference between boundness and roundness

is that boundness is the state or quality of being bound while roundness is the quality of being round.

As nouns the difference between taxonomy and roundness

is that taxonomy is the science or the technique used to make a classification while roundness is the quality of being round.