Old English Words - The K Sound Change

The original Germanic word CARIKA became CHARICHA and that word eventually became CHURCH. When it came before a front vowel, the letters E or I, the sound shifted from the K sound to the CH sound Ch. Another example of this is the original Germanicword THOCK which meant a covering. In Old English THATCH was a type of covering used on a building. And its meaning had evolved from a generic covering to a SHIP covering. So our modern English vocabulary still has many relics of that very early sound change from the Ksound to the CH Sound.