More than 12,000 local police departments were operating in the United States during 2013. A local police department is a general purpose law enforcement agency, other than a sheriffs office, that is operated by a unit of local government, such as a town, city, township, or county.
SaveAs :- Is used to save an already saved document or anything (which you want to save) with a new name. In simple words with Save you save something with SaveAs you create a copy of already saved thing with a new name obviously. I hope you understood the main basic difference. TC.
Save as, on the other hand, is a bit lengthy as one has to go through the entire process of the dialogue box. However, save as, allows the user to save the file to a new location, under a new name and/or format, without saving the changes to the original file. Save and save as are both appropriate at different times, depending on the need of the user. Image Courtesy: iconpedia.net, oracle.com.