Gambia is 5.1 times larger than Comoros.
Area: 2,235 km2 World Factbook
Population: 766,865 (July 2014) World Factbook
The Comoros, officially the Union of the Comoros is a sovereign archipelago island nation in the Indian Ocean, located at the northern end of the Mozambique Channel off the eastern coast of Africa, between northeastern Mozambique and northwestern Madagascar. Wikipedia
Area: 11,295 km2 World Factbook
Population: 1,925,527 (July 2014) World Factbook
The Gambia is a country in West Africa. It is surrounded by Senegal, apart from a short strip of Atlantic coastline at its western end. It is the smallest country on mainland Africa. Wikipedia