fetish vs good luck charm

fetish and good luck charm both are nouns.

Word	Noun	Adjective	Verb	Adverb
fetish	Yes	No	No	No
good luck charm	Yes	No	No	No

As nouns, good luck charm is a hypernym of fetish; that is, good luck charm is a word with a broader meaning than fetish:

Other hypernyms of fetish include charm.

fetish (noun)	good luck charm (noun)
excessive or irrational devotion to some activity	something believed to bring good luck
a charm superstitiously believed to embody magical powers
a form of sexual desire in which gratification depends to an abnormal degree on some object or item of clothing or part of the body