The free software movement is a social movement with the goal of obtaining and guaranteeing certain freedoms for software users, namely the freedoms to run the software, to study the software, to modify the software, and to share copies of the software (whether modified or not). Software which meets these requirements ("The Four Essential Freedoms of Free Software") is termed free software. The word 'free' is ambiguous in English, although in this context, it means 'free as in freedom', not 'free as in zero price'. A common example is, "to think of free speech, not free beer."