cotton paper 3 realizations MACROAREA: Eurasia
NEW Realization 1
type Semantic evolution
language 1 Middle Russian
language 2 Russian
lexeme бумага
meaning 1 cotton fiber, cotton wool
direction
meaning 2 paper
reference СлРЯ XI–XVII: 1, 353 Anikin RES: 5, 131-132
comment

Ultimately from Iranian languages, cf. Pahlavi pambah < *pambak < *panbak ‛cotton’ (with the development of k > g in late Pahlavi), Persian pamba, pämbä, Ossetian bæmbæg, bæmpæk ‛cotton wool’, Punjabi pamba, pumba ‛cotton’, Armenian (< Middle Persian) bambak. The source of Russian бумага may be a form close to Ossetian bæmbæg, like *bambaga > East Slavic *бѫбага (with dissimilation of labials) > бумага.

Berneker E. Slavisches etymologisches Wörterbuch. Bd. 1—2. Heidelberg, 1908—1913, 1, 102
Взаимодействие и взаимообогащение языков народов СССР. М., 1969, 61
Фасмер 1, 240-241
Черных 1, 123
Абаев 1, 249-250
Пичхадзе НРЭ 1: 52
Стеблин-Каменский И. М. Очерки по истории лексики памирских языков: Названия культурных растений. Л., 1982, 54

NEW Realization 2
type Polysemy
language Old Ruthenian
lexeme бумага
meaning 1 cotton
direction
meaning 2 paper
reference ESUM: 1, 294 GSBM: 2, 247-248
comment

Meaning 'paper' 1627 (Ukraine), 1516-1519 (Belarus).

In modern Ukrainian бумага (rare) 'document' SUM-11 1, 255

NEW Realization 3
type Polysemy
language Tatar
lexeme мамык
meaning 1 cotton
direction
meaning 2 paper
reference
comment ЭСТЯ 7, 105 (The Tatar Russian dictionary does not cite the meaning of "paper")