What is the SAME between a rhombus and a square?

all of the angles are the same measure

all of the sides are the same length

Both shapes are quadrilaterals.

using these answers

all of the angles are the same measure

all of the sides are the same length

The sides of a square are equal in length, and a rhombus also has all sides of equal length. Additionally, both shapes have all angles that are equal in measure.