cryptography vs science

cryptography and science both are nouns.

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

As nouns, science is a hypernym of cryptography; that is, science is a word with a broader meaning than cryptography:

cryptography: the science of analyzing and deciphering codes and ciphers and cryptograms
science: a particular branch of scientific knowledge

Other hypernyms of cryptography include scientific discipline.

cryptography (noun)	science (noun)
act of writing in code or cipher	a particular branch of scientific knowledge
the science of analyzing and deciphering codes and ciphers and cryptograms	ability to produce solutions in some problem domain