What is the difference between topographic survey and cadastral survey? . . (Be as specific as possible)

Topographic survey: refers to the work of mapping topographic maps. That is, measure the projection position and elevation of the earth's surface features and topography on the horizontal plane, reduce it according to a certain proportion, and draw a topographic map with symbols and notes. Aerial photogrammetry is basically used in topographic mapping, and aerial photographs are mainly used for indoor mapping. However, for topographic maps with small area or required by engineering construction, the flat plate survey method is used for field mapping. Cadastral survey is an important foundation of land management. Based on cadastral survey, it accurately measures the position and size, boundary, ownership boundary point coordinates, parcel area and cadastral map of all kinds of land from control to fragmentation by means of surveying technology, so as to meet the needs of land management departments and other national economic construction departments. In order to meet the needs of cadastral management, on the basis of land ownership investigation, with the help of instruments and scientific methods, the ownership boundary, position, shape and land type of each piece of land are measured in a certain area, and its area is calculated, and a cadastral map is drawn to provide a basis for land registration. It is the technical basis of land management. It is required to lay out the network in different levels and control it step by step, and follow the principle of "from the whole to the part, first control and then break the part". To put it simply, one is to draw topographic maps, and the other is to manage land and houses.