decipherment vs coding

decipherment and coding both are nouns.

Word	Noun	Adjective	Verb	Adverb
decipherment	Yes	No	No	No
coding	Yes	No	No	No

As nouns, coding is a hypernym of decipherment; that is, coding is a word with a broader meaning than decipherment:

decipherment: the activity of making clear or converting from code into plain text
coding: act of writing in code or cipher

Other hypernyms of decipherment include cryptography, secret writing, steganography.

decipherment (noun)	coding (noun)
the activity of making clear or converting from code into plain text	act of writing in code or cipher