Somalia is 2.6 times larger than Guinea.
Area: 245,857 km2 World Factbook
Population: 11,474,383 (July 2014) World Factbook
Guinea, officially the Republic of Guinea, is a country in West Africa. Formerly known as French Guinea, it is today sometimes called Guinea-Conakry to distinguish it from its neighbour Guinea-Bissau and the Republic of Equatorial Guinea. Wikipedia
Area: 637,657 km2 World Factbook
Population: 10,428,043 (July 2014) World Factbook
Somalia, officially the Federal Republic of Somalia, is a country located in the Horn of Africa. It is bordered by Ethiopia to the west, Djibouti to the northwest, the Gulf of Aden to the north, the Indian Ocean to the east, and Kenya to the southwest. Wikipedia