Like I said - the terms get scrambled up a lot and get used incorrectly.
Go read the above on Silicides, - I have seen the term "polycide" (and other equally strange terms) used in various foundry documents as well. You need to go to the foundry to get the specifics of what they are really doing. In a lot of cases they made up a name for something they are doing, and that's fine. You invent it, you get to name it.
But then, here in the USA what gets created at Taco Bell (and their strange names) doesn't exist in Mexico.
Also, last I checked, the "Chinese Fortune Cookie" is very much an American invention and has nothing to do with China.
For those of you in the far east:
http://www.chinese-fortune-cookie.com/Silicide? Salicide? Polycide? "Super Deep N-Well Trench Technology" and many other terms are used without a science basis and largely get created in the marketing department, not engineering.