devotion vs fetich

devotion and fetich both are nouns.

Word	Noun	Adjective	Verb	Adverb
devotion	Yes	No	No	No
fetich	Yes	No	No	No

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

Other hyponyms of devotion include cultism, hobbyism, fetish, party spirit.

devotion (noun)	fetich (noun)
(usually plural) religious observance or prayers (usually spoken silently)	excessive or irrational devotion to some activity
commitment to some purpose	a charm superstitiously believed to embody magical powers
religious zeal; the willingness to serve God
feelings of ardent love