The heading text explicitly carves out rice, directing all forms of worked rice — including parboiled, flaked, or puffed rice — back to heading 1006, which comprehensively covers rice at all processing stages. This is a deliberate structural choice in the HS nomenclature, not an oversight.

Pearling removes the outer bran layers of a whole grain by abrasion, leaving a recognizable grain shape. Groats and meal involve breaking or grinding the grain into smaller particles. Pearled barley, oats, or corn retain their grain form and are classified under 1104, while ground or fragmented products of the same grains go to 1103.