Coding
Part of speech: noun
Definition: The process of encoding or decoding. The process of writing computer software code. An encoding.
Part of speech: verb
Definition: To write software programs.
Example sentence: I can't live without my smartphone, but I really geek on coding. It's not so much technology that I like, but puzzle solving.
Steganography
Part of speech: noun
Definition: The practice of hiding messages, so that the presence of the message itself is hidden, often by writing them in places where they may not be found.Specifically: the use of small files in computers to communicate secret information.