(license card are

__actually rectangle.__)

Words like 'square/triangle' are easy,

but 'quadrilateral/equilateral(regular) square/equilateral(regular) triangle' are

__extremely unfamiliar__to me.

I haven't heard

__the word 'quadrilateral' in normal conversations__when people describe something's shape.

'The shape of the desk is quadrilateral.'

'Bend the wire into the shape of a quadrilateral.'

I noticed that 'rectangle/quadrilateral' are sometimes translated in just 'square'. (in my country)

And I learned a word 'quadrilateral' today, it makes me curious.

Q. I wonder that if I say something's shape is square,

__English users will always understand it as a regular quadrilateral?__

Or

__is it not awkward__to call quadrilateral/rectangle things just square?

'A license card is square.'(actually rectangle)

'A4 papers are square.'(actually rectangle)

'Excel is full of squares.'(actually rectangle + regular square)

Thank you.