vertical union vs trades union

vertical union and trades union both are nouns.

Word	Noun	Adjective	Verb	Adverb
vertical union	Yes	No	No	No
trades union	Yes	No	No	No

As nouns, trades union is a hypernym of vertical union; that is, trades union is a word with a broader meaning than vertical union:

vertical union: a labor union that admits all workers in a given industry irrespective of their craft
trades union: an organization of employees formed to bargain with the employer

Other hypernyms of vertical union include brotherhood, labor union, trade union, union.

vertical union (noun)	trades union (noun)
a labor union that admits all workers in a given industry irrespective of their craft	an organization of employees formed to bargain with the employer