Convert kml to osm

What is the difference between .kml and .osm?

Description: A KML (Keyhole Markup Language File) is a plaintext file format used to display geographic data in an Earth browser such as Google Earth, Google Maps, and MapQuest. KML files specify various geographic information, including points, lines, images, polygons, and models, along with attributes like descriptions, place marks, and camera angles. This format, which is based on XML (eXtensible Markup Language), allows users to not only visualize but also navigate through locations and structures.; An OSM file contains street map information in the OpenStreetMap (OSM) format. It saves XML-formatted data in the form of "nodes" (points), "ways" (connections), and "relations" (street and object properties, such as tags).