Ethiopia is 2.1 times larger than Yemen.
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
Area: 527,968 km2 World Factbook
Population: 26,052,966 (July 2014) World Factbook
Yemen, officially known as the Republic of Yemen, is an Arab country in Western Asia, occupying the southwestern to southern end of the Arabian Peninsula. Yemen is the second largest country in the peninsula, occupying 527,970 km². The coastline stretches for about 2,000 km. Wikipedia