prosecuting officer vs lawyer

prosecuting officer and lawyer both are nouns.

Word	Noun	Adjective	Verb	Adverb
prosecuting officer	Yes	No	No	No
lawyer	Yes	No	No	No

As nouns, lawyer is a hypernym of prosecuting officer; that is, lawyer is a word with a broader meaning than prosecuting officer:

prosecuting officer: a government official who conducts criminal prosecutions on behalf of the state
lawyer: a professional person authorized to practice law; conducts lawsuits or gives legal advice

Other hypernyms of prosecuting officer include attorney, functionary, official.

prosecuting officer (noun)	lawyer (noun)
a government official who conducts criminal prosecutions on behalf of the state	a professional person authorized to practice law; conducts lawsuits or gives legal advice