Samoa is 3.8 times larger than Tonga.
Area: 747 km2 World Factbook
Population: 106,440 (July 2014) World Factbook
Tonga, officially the Kingdom of Tonga, is a Polynesian sovereign state and archipelago comprising 176 islands with a surface area of about 750 square kilometres scattered over 700,000 square kilometres of the southern Pacific Ocean, of which 52 are inhabited by its 103,000 people. Wikipedia
Area: 2,831 km2 World Factbook
Population: 196,628 (July 2014) World Factbook
Samoa, officially the Independent State of Samoa, formerly known as Western Samoa, is an Oceanian country encompassing the western part of the Samoan Islands in the South Pacific Ocean. It became independent from New Zealand in 1962. Wikipedia