Keep it civil, do not flame or bait other users. If you notice anything illegal or inappropriate being discussed, contact an administrator or moderator.
In the future, you might want to ask these kins of questions over on the gardeners guild forum: forum #1706.
orz/all_fours: All_fours is used when anyone is standing with their hands and knees on the floor. Orz is similar, but refers specifically to someone bent over on their knees in submission.
older_woman_and_younger_girl/onee-loli: The wiki for onee-loli says "a loli character and a significantly more developed/older looking female character are interacting sexually or romantically." I didn't see an entry for older_women_and_younger_girl, but my best guess would be that it would be similar, but the younger of the pair isn't a loli.