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.
In Ms word SAVE is used for saving a file for 1st time in Ms Word and this helps in selecting and saving the file in a specified path but when we use SAVE AS in Word (can be used after in a saved file) it helps in specifing a new path to save an existing file and also can be used to rename a file.