Employment by the City of Englewood shall be in one of the following categories:
C.
Special grant positions, which shall include positions for which salaries are paid by grants from the federal government, or from the State of New Jersey, or from other governmental agencies, which positions shall continue in existence only so long as such grants shall continue.
D.
Temporary employees, which shall include employees hired on a nonpermanent basis, whether for a specified or unspecified period of time, and whether to fill a temporarily created position or to fill a permanent position on a temporary basis.