Gratis versus Libre is the istinction between 'zero price' (gratis) and 'freedom' (libre). Gratis appears in many English dictionaries, including the Oxford English Dictionary. However, libre usually does not at present, and no English adjective signifies freedom only. This distinction is often important in dealing with laws concerning the use of information, such as copyright and patents. The terms are often used in the free software and open source communities, as well as the broader free culture movement, to categorize computer programs according to the licenses and legal restrictions that cover them. Both this expression and the term gratis are used to distinguish freeware (gratis software) from free software.