trial attorney vs attorney

trial attorney and attorney both are nouns.

Word	Noun	Adjective	Verb	Adverb
trial attorney	Yes	No	No	No
attorney	Yes	No	No	No

As nouns, attorney is a hypernym of trial attorney; that is, attorney is a word with a broader meaning than trial attorney:

trial attorney: a lawyer who specializes in defending clients before a court of law
attorney: a professional person authorized to practice law; conducts lawsuits or gives legal advice

Other hypernyms of trial attorney include lawyer.

trial attorney (noun)	attorney (noun)
a lawyer who specializes in defending clients before a court of law	a professional person authorized to practice law; conducts lawsuits or gives legal advice