When I first saw this post the other day, I had to do a double take because I thought you were doing a play on words "What are the yods" like it was a question "What are the odds?". And then I realized it was "what are yods?" Seeing no one has reponded I hope it's not against forum rules to post a few links, but I Googled it for you; there is such a thing as yods in
astrology (which describes yods as planets forming a sextile) and in tarot (they appear to be dart like or arrows, not spears - but they show an example in one of the links provided) and then the word also means creating anagrams from particular words by adding another letter. Here is what I found, hope one of these links helps
morewords.com/word/yods/
astrologynew.com/node/96
yodastrology.com/yods.html
dharma-talks.com/ezine/2001fall.htm