Collective noun
The noun 'staff' is a standard collective noun for a staff of employees.
The collective noun 'staff' is used for a staff of workers or a staff of employees.
The collective noun 'staff' is used for a staff of workers or a staff of employees.
The noun staff is a singular, common, collective noun.
The noun staff is a singular, common, collective noun.
The word "staff" itself is a collective noun: E.g. (American English) "The staff is on break." (British English) "The staff are on break."
Collective noun
The plural form for of the noun chief-of-staff is chiefs-of-staff.
The plural form for of the noun chief-of-staff is chiefs-of-staff.
Staff of teachers
The plural form for of the noun chief-of-staff is chiefs-of-staff.
The collective noun for the noun teachers is a faculty of teachers.