I noticed you often mentioned the term "pure sukoon", I don't know what's the meaning of pure sukoon and how to pronounce it?

Question
Salaam Alaikum, the staff of abouttajweed.com

In yr courses, i noticed u often mentioned the term "pure sukoon", i dont know what's the meaning of pure sukoon and how to pronounce it? Plz give me some clues. Thx

Answer
Wa alaikum assalaam wa rahmatullahi wa barakatuh,
A sukoon is the absence of a vowel.  When we stop on a word, we stop with a sukoon on the last letter.    A pure sukoon or is a sukoon free of  or .  In other words, it is a plain sukoon (absense of a vowel) on a sukoon or put on a letter that had a vowel   This term cannot be used on words that have a tanween fath or medd letters. 
Please see: www.abouttajweed.com/stopping-on-the-ends-of-words/stopping-on-the-ends-of-words-3.html , which has the explanation of the pure sukoon in it. 
Wa assalaam alaikum