Ethiopia is 9.4 times larger than Eritrea.
Area: 117,600 km2 World Factbook
Population: 6,380,803 (July 2014) World Factbook
Eritrea, officially the State of Eritrea, is a country in the Horn of Africa. Eritrea is the Italian form of the Greek name Ἐρυθραία, meaning "red [land]". With its capital at Asmara, it is bordered by Sudan to the west, Ethiopia in the south, and Djibouti in the east. Wikipedia
Area: 1,104,300 km2 World Factbook
Population: 96,633,458 (July 2014) World Factbook
Ethiopia, officially known as the Federal Democratic Republic of Ethiopia, is a country located in the Horn of Africa. It is bordered by Eritrea to the north and northeast, Djibouti and Somalia to the east, Sudan and South Sudan to the west, and Kenya to the south. Wikipedia