As nouns the difference between chiromancy and chirognomy
is that chiromancy is divination performed by examining the lines in the palms while chirognomy is the art of judging character by the shape and appearance of the hand.
As nouns the difference between chirognomy and chironomy
is that chirognomy is the art of judging character by the shape and appearance of the hand while chironomy is (obsolete) the art of moving the hands in oratory or in pantomime; gesture.