蝦夷方言藻汐草

Tamura, Kayano and Batchelor directly document pana for dust or fine powder, matching 埃（ホコリ）. The word and confidence are retained. Batchelor separately records a directional pana meaning below; an accented pána corpus example concerns movement downstream. Accent folding mixes that record into the count, so the raw total does not count dust attestations alone. Recent radiation-related examples show modern use of the older dust word; they do not date the historical entry or make those modern compounds early vocabulary.