Land Rover Motor Company is the main automotive company. The Range Rover (and now the Range Rover Sport) are simply models under the Land Rover Marque. Land Rover cars including the LR2 (Freelander 2) and the LR3 (Discovery 3) are maked with "Land Rover" simply because they are different models. In short, Land Rover is the company and Range Rover is a specific model. The difference is just in the various models of cars.
The 2006 Land-Rover Range-Rover has 32 valves.
The 2006 Land-Rover Range-Rover has a V8 engine.
The 2004 Land-Rover Range-Rover has a V8 engine.
The 2014 Land-Rover Range-Rover has a V6 engine.
The 2009 Land-Rover Range-Rover has a V8 engine.
The 2010 Land-Rover Range-Rover has 32 valves.
The 2008 Land-Rover Range-Rover has 32 valves.
The 2002 Land-Rover Range-Rover has 16 valves.
The 2014 Land-Rover Range-Rover has 24 valves.
The 2012 Land-Rover Range-Rover has a V8 engine.
The 2005 Land-Rover Range-Rover has 32 valves.
The 2003 Land-Rover Range-Rover has 32 valves.