Customize with add-on apps and APIs" (from AutoDesk"AutoCAD® is computer-aided design (CAD) software that architects, engineers, and construction professionals rely on to create precise 2D and 3D drawings.
Draft, annotate, and design 2D geometry and 3D models with solids, surfaces, and mesh objectsAutomate tasks such as comparing drawings, adding blocks, creating schedules, and more[Sketchup is] our full-featured desktop modeler, built to make anything your imagination can create...[it's] the most intuitive way to design, document and communicate your ideas in 3D...[and] enables you to design, define, and plan in all stages of the project." (from Trimble's website).
For more information on available features and functions of AutoCADSketchUp Pro, please see Autodesk Trimble's website.