The Spanish verb 'coser' (to sew) comes from the Latin word 'consuere', which meant 'to sew together'. This Latin word was formed by combining two elements: the prefix 'con-' meaning 'together' and the verb 'suere' meaning 'to sew'. Over time, as Latin evolved into Spanish, 'consuere' simplified to become 'coser', while maintaining its basic meaning of sewing.

The Spanish word 'costura' (seam or sewing) is directly related to 'coser', as it describes the result of sewing. Similarly, 'costurera' (seamstress) and 'descosido' (unsewn) are part of the same word family.

While English 'sew' comes from a different Germanic root, we can find the Latin root 'suere' in English words like 'suture', which is a medical term for stitching wounds. The word 'seamstress' is not related to 'coser', but performs the same function as Spanish 'costurera'.