Ghoul vs Jikininki

Ghoul
Ghoul (Arabic: غول, ghūl) is a demon-like being or monstrous humanoid originating in pre-Islamic Arabian religion, associated with graveyards and consuming human flesh. In modern fiction, the term has often been used for a certain kind of undead monster. By extension, the word ghoul is also used in a derogatory sense to refer to a person who delights in the macabre or whose profession is linked directly to death, such as a gravedigger or graverobber.
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Jikininki
Jikininki (食人鬼, "human-eating ghosts") appear in Lafcadio Hearn's Kwaidan: Stories and Studies of Strange Things (1904) as corpse-eating spirits. In Japanese Buddhism, jikininki ("human-eating ghosts"; pronounced shokujinki in modern Japanese), are similar to Gaki/Hungry ghost; the spirits of greedy, selfish or impious individuals who are cursed after death to seek out and eat human corpses. A similar story can be found as "Aozukin" in Ueda Akinari's Ugetsu Monogatari from 1776.