The nature of a convergent boundary depends on the type of plates that are colliding. Where a dense oceanic plate collides with a less-dense continental plate, the oceanic plate is typically thrust underneath because of the greater buoyancy of the continental lithosphere, forming a subduction zone.
Medical Definition of URINAL. 1. : a vessel so constructed that it can be used for urination by a bedridden patient. 2. : a container worn by a person with urinary incontinence.
Definition of urn 1: a vessel that is typically an ornamental vase on a pedestal and that is used for various purposes (such as preserving the ashes of the dead after cremation) 2: a closed vessel usually with a spigot for serving a hot beverage