Samoa is 5.2 times larger than Guam.
Area: 544 km2 World Factbook
Population: 161,001 (July 2014) World Factbook
Guam is an organized, unincorporated territory of the United States in the western Pacific Ocean. It is one of five U.S. territories with an established civilian government. 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