It is difficult to pin down the meaning of Ethiopianism, a “notoriously protean term,” says Eric Sundquist, one of the phenomena, says Paul Gilroy, that “we struggle to name as Pan-Africanism, Ethiopianism, Emigrationism....” Adding yet a third term, Wilson J. Moses characterizes Ethiopianism as a variant form of black nationalism, itself "often indistinguishable from the idea of Pan- Africanism."
Source: wiktionary