Lamination and UV coating are two different processes; so the term "UV lamination" is actually a contradiction.
In lamination, a thin film is applied to the substrate (Paper or board) using adhesive. The adhesive is applied to the film with roller before attachment to the substrate. In smaller laminating machines the film already has heat curing adhesive when purchased. The film is the applied to the substrate by using heated rollers. For matte lamination, the film used has a matte finish.
In UV coating, a very heavy coating of varnish is applied to the substrate. The varnish is a ultra violet (UV) curing type so that when the varnished substrate passes through the UV curing unit, it dries fast. This prevents the substrate from sticking and produces a high gloss. The varnish can be applied with rollers, dry offset or silk screen.
The choice between lamination and UV coating will really depend on the use of the end product; because, visually, both look the same. Lamination offers more protection but is more expensive than UV.
I don't believe that you can spot laminate; because this will mean applying film on specific areas. For spot application, we use spot UV coating. The varnish is applied to specific areas using serif process or silkscreen, before the UV curing.
Many companies such as High Gloss, GVJ, and Fine Horse offer 3D effects like crack ice. You can ask them for samples.