Trinidad and Tobago is 15 times larger than Grenada.
Area: 344 km2 World Factbook
Population: 110,152 (July 2014) World Factbook
Grenada is an island country consisting of the island of Grenada and six smaller islands at the southern end of the Grenadines in the southeastern Caribbean Sea. Grenada is located northwest of Trinidad and Tobago, northeast of Venezuela, and southwest of Saint Vincent and the Grenadines. Wikipedia
Area: 5,128 km2 World Factbook
Population: 1,223,916 (July 2014) World Factbook
Trinidad and Tobago, officially the Republic of Trinidad and Tobago, is a twin island country off the northern edge of South America, lying just off the coast of northeastern Venezuela and south of Grenada in the Lesser Antilles. Wikipedia