Interpretation is really all it is. There are no industry standards. Artemis' explanation in post #3 is really good.
The other issue you run into is that there are a lot of "mom and pop" shops selling hair products on the internet, farm markets, etc. Anyone can mix something up and offer it for sale. They don't really need to have any knowledge, they just have to have someone willing to buy.
3a (Corkicelli), highlighted, fine, low porosity
modified CG, since April '07
CG since 3/11/08
HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic; Botanical Spirits Jellies, CJ Repair Me, Marie Dean Leave Ins and Curl Creams