official vs trained worker

official and trained worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
official	Yes	Yes	No	No
trained worker	Yes	No	No	No

As nouns, trained worker is a hypernym of official; that is, trained worker is a word with a broader meaning than official:

Other hypernyms of official include skilled worker, skilled workman.

official (noun)	trained worker (noun)
someone who administers the rules of a game or sport	a worker who has acquired special skills
a worker who holds or is invested with an office

official (adjective)	trained worker (adjective)
having official authority or sanction
of or relating to an office
verified officially
(of a church) given official status as a national or state institution
conforming to set usage, procedure, or discipline