gres-gris vs amulet

gres-gris and amulet both are nouns.

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

As nouns, amulet is a hypernym of gres-gris; that is, amulet is a word with a broader meaning than gres-gris:

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

Other hypernyms of gres-gris include talisman.

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