Durum grain, semolina, flour, pasta and planting seed are separate products
USDA defines Durum wheat as the Triticum durum class within the U.S. wheat standards. Grain can be milled into semolina or flour and then manufactured into pasta, but those processed forms are not interchangeable with the original grain. Planting seed adds varietal identity, germination, purity and treatment evidence. Atlas keeps product stage and intended use explicit before comparing production, quality, trade or price evidence.