trade union movement vs trade union

trade union movement and trade union both are nouns.

Word	Noun	Adjective	Verb	Adverb
trade union movement	Yes	No	No	No
trade union	Yes	No	No	No

trade union movement (noun)	trade union (noun)
an organized attempt by workers to improve their status by united action (particularly via labor unions) or the leaders of this movement	an organization of employees formed to bargain with the employer