minors vs bush league

minors and bush league both are nouns.

Word	Noun	Adjective	Verb	Adverb
minors	Yes	No	No	No
bush league	Yes	No	No	No

As nouns, minors and bush league are synonyms defined as:

minors and bush league: a league of teams that do not belong to a major league (especially baseball)

Other synonyms of minors include minor league.

minors (noun)	bush league (noun)
a league of teams that do not belong to a major league (especially baseball)	a league of teams that do not belong to a major league (especially baseball)