Octagon vs. Hexagon

A polygon with eight sides and eight angles.

A polygon with six sides and six angles.

A polygon with eight sides and eight angles.

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

(martial arts) Often in the form Octagon: the arena for mixed martial arts.

A plane figure of six angles.

A plane figure of eight sides and eight angles.

A six-sided polygon

Any structure (as a fortification) or place with eight sides or angles.

An eight-sided polygon