Areas vs Radius - What's the difference?

As nouns the difference between areas and radius

is that areas is while radius is radius.

(head)

* ----

(en-noun)

(anatomy) The long bone in the forearm, on the side of the thumb.

(zoology) The lighter bone (or fused portion of bone) in the forelimb of an animal.

(entomology) One of the major veins of the insect wing, between the subcosta and the media

(geometry) A line segment between any point on the circumference of a circle and its center/centre.

(geometry) The length of this line segment.

* (vein of insect wing) R