cryptography vs cryptology

cryptography and cryptology both are nouns.

Word	Noun	Adjective	Verb	Adverb
cryptography	Yes	No	No	No
cryptology	Yes	No	No	No

As nouns, cryptography and cryptology are synonyms defined as:

cryptography and cryptology: the science of analyzing and deciphering codes and ciphers and cryptograms

Other synonyms of cryptography include cryptanalysis, cryptanalytics.

cryptography (noun)	cryptology (noun)
act of writing in code or cipher	the science of analyzing and deciphering codes and ciphers and cryptograms
the science of analyzing and deciphering codes and ciphers and cryptograms