This booklet is intended to give teachers and students the necessary background for using Yoga terms competently and confidently. Because students are often wondering whether a term is masculine, feminine, or neuter, the gender is indicated throughout. Georg included a few simple Sanskrit phrases or sentences here and there to encourage linguistically more gifted Yoga students to acquaint themselves with the Sanskrit language in which literally thousands of Yoga texts are written. In order to stimulate an interest in this, I have used a larger size for the devanagari font.