in a 2D image yes, because being four sided, it will always be some configuration of a square.
four sides and four corners
a square and a rhombus
It is a square as square has 4 sides and all of them are equal. Also it has 4 corners.
Both statements are not always true. A square is a rectangle (a shape four sides and four corners which are all right angles) but a rectangle is not necessarily a square (a shape with four equal sides and four corners that are all right angles).
A square box
A quadrilateral.
No shape can have two corners
A QUADRILATERAL has four corners and four sides, along with four angles. These do not need to be congruent (equal) but they can be.
Four corners and sides
There is no such shape. If it has two sides meeting, it also has to have a corner. A triangle has three sides and three corners, and a square has four sides and four corners. There is nothing in between.
A Square
Four each.