Viddiamaya and avid diamaia vidya means knowledge, the mar of knowledge. And avid diamaya also projection, which is anger, avarice, lust, greed,. One ties you more and more into the projection. The other one frees you from the projection. Are equally projection, but one is if you are caught up in the projection, you need one, and you need to get rid of the other. Then you rise beyond both.