From a long time I thought that the shodasi in dasamahavidyas and shodasakshari given in the Srividya tradition are same but when going through the YouTube video of a guru he mentioned in between that there is a small difference between them. he mentioned in between a topic and didn't talk much about the difference . So now my doubt is what is the main difference or that little difference between the Shodasi and shodasakshari.is it the tattva difference or mantra difference or else there is no difference. please explain