VITA – The Latin word for “life.” It is often combined with MORS which is Latin for “death.” The two were often displayed together, sometimes on the opposing arms of a cross.
X – A letter used to abbreviate the word Christ in a word (i.e. Xmas). The X is used because it stands for the Greek letter “Chi” (χ = ch) which is the first letter in “Christos” meaning Christ.
YHWH – The sacred name of God known as the Tetragrammaton. When a Jew comes to this word while reading Scripture out loud, he will use the substitute word Adonai, meaning “Lord,” instead. While we are unsure how the word is pronounced, it is thought to be spelled “Yahweh”. Later through translation, the “Y” became a “J” and the “W” a “V”. Since Adonai is said instead of JHVH, the vowels from Adonai were added to the consonents and the name “Jehovah” resulted.