Geospatial Data:
Geospatial Data can be defined as information regarding events, objects, or phenomena that can be located on the surface of the Earth. This also means that the records in a geospatial data set have information tied to them about about a geographic location. This is often in the form of coordinates, but information like addresses, cities, and zip codes are also used.
Symbology:
the study or use of symbols. In the context of the ArcGIS Pro software symbology represents the way the data is displayed. For example when working with a layer of data representing states; one could change the color of the states, the color and thickness of the outlines, and the transparency of the layer.
GIS:
GIS stands for geographic information system. GIS are systems used to store, manipulate, and analyze geographic data. GIS are different from digital maps because a GIS can be manipulated in order to display multiple layers of information at once. GIS is also different from a digital map because it is made using information pulled from a geospatial data-set.
Raster Dataset:
An image composed of a grid of pixels