South Pacific country (5)
(Other definitions for samoa that I've seen before include "Group of volcanic islands in the S Pacific" , "Southwest Pacific island group" , "Group of Polynesian 14s" , "Commonwealth country in the Pacific, capital Apia" , "SW Pacific island chain" .)
(Other definitions for tonga that I've seen before include "Horse-drawn vehicle" , "S.W Pacific Kingdom" , "Tropic island" , "Polynesian island" , "transport" .)