staff office vs personnel

staff office and personnel both are nouns.

Word	Noun	Adjective	Verb	Adverb
staff office	Yes	No	No	No
personnel	Yes	No	No	No

As nouns, staff office and personnel are synonyms defined as:

staff office and personnel: the department responsible for hiring and training and placing employees and for setting policies for personnel management

Other synonyms of staff office include personnel department, personnel office.

staff office (noun)	personnel (noun)
the department responsible for hiring and training and placing employees and for setting policies for personnel management	group of people willing to obey orders
	the department responsible for hiring and training and placing employees and for setting policies for personnel management