What is a hyphen doing after PID for process in terminal

I am trying to get more familiar with Terminal and have looked at the 'top' command to view running processes and using that with the 'kill' command. Some programs seem to have a hyphen at the end of their process ID. What does this mean? The kill command doesn't really work on those applications. Instead of completely getting rid of the process it just seems to restart it. Microsoft Word always seems to have this hyphen in its PID, see the screenshot.
Any advice on what this is? How can I use it with the kill command?
Thanks.

I cannot tell why top does what it does.
When I did
top -l 1 >tmp.tmp
I found processes with - and + attached, but no *
If a process restarts, it is because something restarted it. Where restart means it gets a new PID.
If a process does not die after a kill, it can mean:
a) that the process was written to catch the signal you sent (although -9 or -KILL cannot be caught).
b) Or the process in in kernel address space and is not returning (signals cannot be delivered to a process current in Kernel address space; such as the process made a kernel system call and has not returned because the system call is hung, like waiting for an I/O to finish that is never going to finish because of a problem).
c) you do not have sufficient privileges to kill that process (sudo kill -KILL pid # will generally kill anything that is killable).
I am assuming you are NOT including the - in the kill command, such as 1234- as I assume the kill command would not like the trailing -
You can also use Applications -> Utilities -> Activity Monitor to see if a process is 64 or 32 bits via the 'Kind' column. Activity Monitor also has a built-in kill button.

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[SM36/37: Specification "After Job" does not work for Daily "periodcity"|SM36/37: Specification "After Job" does not work for Daily "periodcity";

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