devotion vs hobbyism

devotion and hobbyism both are nouns.

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

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

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

devotion (noun)	hobbyism (noun)
(usually plural) religious observance or prayers (usually spoken silently)	a devotion to hobbies
commitment to some purpose
religious zeal; the willingness to serve God
feelings of ardent love