jackal vs grey jackal

jackal and grey jackal both are nouns.

Word	Noun	Adjective	Verb	Adverb
jackal	Yes	No	No	No
grey jackal	Yes	No	No	No

As nouns, grey jackal is a hyponym of jackal; that is, grey jackal is a word with a more specific, narrower meaning than jackal:

jackal: Old World nocturnal canine mammal closely related to the dog; smaller than a wolf; sometimes hunts in a pack but usually singly or as a member of a pair
grey jackal: a canid living in the deserts of Northern Africa related to the goldn jackal and the grey wolf

As nouns, jackal and grey jackal are synonyms defined as:

jackal and grey jackal: a canid living in the deserts of Northern Africa related to the goldn jackal and the grey wolf

Other synonyms of jackal include African golden wolf, Canis anthus, Egyptian jackal.

jackal (noun)	grey jackal (noun)
Old World nocturnal canine mammal closely related to the dog; smaller than a wolf; sometimes hunts in a pack but usually singly or as a member of a pair	a canid living in the deserts of Northern Africa related to the goldn jackal and the grey wolf
a jackal native to Europe and Asia with a golden coat
a jackal native to Africa with a black back
a jackal native to Southern Africa with a stripe down its side
a canid living in the deserts of Northern Africa related to the goldn jackal and the grey wolf