talisman vs gres-gris

talisman and gres-gris both are nouns.

Word	Noun	Adjective	Verb	Adverb
talisman	Yes	No	No	No
gres-gris	Yes	No	No	No

As nouns, gres-gris is a hyponym of talisman; that is, gres-gris is a word with a more specific, narrower meaning than talisman:

talisman: a trinket or piece of jewelry usually hung about the neck and thought to be a magical protection against evil or disease
gres-gris: an African amulet

Other hyponyms of talisman include greegree, grigri.

talisman (noun)	gres-gris (noun)
a trinket or piece of jewelry usually hung about the neck and thought to be a magical protection against evil or disease	an African amulet