steganography vs coding

steganography and coding both are nouns.

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

As nouns, steganography and coding are synonyms defined as:

Other synonyms of steganography include cryptography, secret writing.

steganography (noun)	coding (noun)
act of writing in code or cipher	act of writing in code or cipher