Koruzni škrob
Both flour and starch can be derived from any starch-containing plant. For example, potato flour derives from the whole potato, according to the Science of Cooking. The resulting powder contains potato starch, protein, sodium, and other micronutrients. By contrast, potato starch, which comprises just the starch, is derived through isolation and extraction.
https://www.tastingtable.com/1022545/the-main-difference-between-flour-and-starch/