Guiana
geographical name
Gui·a·na gē-ˈa-nə 
-ˈä-nə;
gī-ˈa-nə
region of northern South America bordering on the Atlantic and bounded on the west and south by the Orinoco, Negro, and Amazon rivers; includes Guyana, French Guiana, and Suriname also collectively known as the Guianas , and adjoining parts of Brazil and Venezuela
Guianan
gē-ˈa-nən
adjective or noun Guianese
ˌgī-ə-ˈnēz
adjective or noun ˌgē-ə-
-ˈnēs