With regards to your 2nd problem about context: given that English Generally likes to adopt the shortest phrasing doable, the extended variety "free of demand" can be used as a method of drawing attention to the lack of demand for payment and so giving it higher emphasis. The exact same emphasis is often provided with the expression "free of all

The noun perception of "ornamental festoon" is first found 1794. Colloquial perception of "advertising material" (from recording companies, and many others.) was in use by 2001; swag was English felony's slang for "quantity of stolen property, loot" from c. "A overall performance shall be viewed as currently being furnished for revenue for the g