class vs brass family

class and brass family both are nouns.

Word	Noun	Adjective	Verb	Adverb
class	Yes	No	Yes	No
brass family	Yes	No	No	No

As nouns, brass family is a hyponym of class; that is, brass family is a word with a more specific, narrower meaning than class:

class (noun)	brass family (noun)
education imparted in a series of lessons or meetings	(music) the family of brass instruments
elegance in dress or behavior
a collection of things sharing a common attribute
people having the same social, economic, or educational status
(biology) a taxonomic group containing one or more orders
a body of students who are taught together
a body of students who graduate together
a league ranked by quality

class (verb)	brass family (verb)
arrange or order by classes or categories