3 similarities between PS and LR

1. both have built in editing tools
2. The bulk of the greatest picture formats, such as JPG, PNG, TIFF, and, RAW, are supported by both.
3.  Both Lightroom and Photoshop use Adobe’s RAW file processor, Camera RAW, to process RAW files

3 differences between PS and LR

1. you can create your own image in photoshop.
2. You can also organize your files and edit photos using Lightroom. However, Lightroom lacks design tools in contrast to Photoshop.
3. Photoshop is made to be used by graphic designers to produce and edit raster graphics, whereas Lightroom is made for photographers who want to edit and convert RAW image files.