Both the Greek letters X (chi)and K (kappa) are often transliterated to "ch" in English -- this is the sourse of confusion!
Words written in Greek with a chi (eg.
Chloe,
Chara and
Charis) are prounounced in Greek with an "H" (soft as in house, not "throat-clearing-harsh" as in Scottish or Hebrew): HLOE-ee, ha-RAH, HA-rees). Conversely, those written in Greek with a K (eg.
Nicholas) are pronounced with a "K" sound.
Sounds Greek to you?