As used in this subtitle:
"Municipality" means any city, town, village, borough, township or any municipality governed by boards of commissioners or improvement commissions which has heretofore adopted the provisions of the act entitled "An act relating to, regulating and providing for the government of municipalities, except counties, by a municipal council and a municipal manager," approved March nineteenth, one thousand nine hundred and twenty-three, or which shall adopt or take proceedings to adopt this subtitle.
"Municipal council" means the governing body of such municipality, which body shall be known as the city council, town council, village council, borough council or township council, as the case may be.
"Municipal clerk" means the city clerk, town clerk, village clerk, borough clerk or township clerk, as the case may be, of such municipality.
"Municipal attorney" means the city attorney, town attorney, village attorney, borough attorney or township attorney, of the municipality, as the case may be.
"Municipal manager" means the chief executive and administrative officer of any such municipality who shall be known as the city manager, town manager, village manager, borough manager or township manager, as the case may be.
"Department head" means the executive or administrative head of a subdivision of the municipal government acting under the immediate direction of the municipal council or municipal manager.
N.J.S. § 40:79-2