an unvarying or habitual method of procedure

a habitually repeated performance of some actions

a stand alone procedure, not associated with any type

a function or routine is a programmer's term for a process a program executes. Routines do different things; there's a routine for saving a file, displaying it on a screen, etc. Local routines are those that execute on the same computer, while remote procedural calls execute routines on other computers. See also: remote procedural call.

routine is short-hand for procedure or function. Hence routine is also the equivalent of method. [ edit

A generic term for a procedure or function.