What do these things mean?!?!

made specifically for a few of my friends who got skindex accounts and dont know what some things mean for example skin trades
(if youre a beginner and dont know then you can read it too)

Colab: when two people make a skin together (one person makes half of it, and the other makes the other half)

Skin trade (ST): when two people both make unshaded skins, and shade the others

Reshade Contest (RC): when one person makes an unshaded skin, and other people participate by tagging it what it says to tag in the description, and shading it, then putting the link to their skin in the comments of the original skin.

Outfit Base (OB): when someone makes a skin that is just clothes, no hair or skin or anything, and other people can use it to make a skin if they credit that person.

Hair Base (HB): same as OBs, except its hair instead of outfits (and sometimes skin and eyes)

Tourney: when someone puts out a tourney signups skin. Everyone who wants to join the tourney will say "joining" in the comments.
There will be multiple rounds and some people will be eliminated every round if their skins werent as good as others.
Im out of room more in comments dont comment till i say Bananas