False friend ES sounds like CS
cuadro
ES [ˈkwaðɾo] · sounds like Czech kvádr (and Nvidia Quadro)
Brain hears kvádr - a cuboid (or a Quadro GPU) Actually a picture / painting; a square; a table
Spanish cuadro is indeed a tricky one. It covers a whole family of meanings - a picture or painting, a square, a table or chart. To my Czech-and-gamer brain it pings kvádr, one of the basic 3D shapes a person can think of, and even Nvidia’s Quadro graphic cards. What a pity that none of those is what the Spanish interpretation actually means.
Why it happens
As far as I can tell, a clean three-way divergence from one root: the dictionaries send all three back to Latin quadrum / quadrus (“square, four”). Spanish took picture-and-square, Czech the solid kvádr, and a GPU brand borrowed the idea. Same source, three destinations.