Hexagon vs Octagon - What's the difference?

As nouns the difference between hexagon and octagon

is that hexagon is a polygon with six sides and six angles while octagon is a polygon with eight sides and eight angles.

(wikipedia hexagon)

(en noun)

A polygon with six sides and six angles.

* Lemoine hexagon * Tucker hexagon

(en noun)

(geometry) A polygon with eight sides and eight angles.

(martial arts, usually capitalized) The arena for mixed martial arts, particularly as trademarked by the .