codes
n. C / Un. a set of letters, numbers, or symbols used to hide a message or represent information. You also use this word for the rules that tell a computer what to do.
n. a system of symbols, letters, or words used to represent others, often for secrecy or data processing. In computing, refers to the instructions written in a programming language.
You need to enter the secret codes to open the door.
The software developer spent the afternoon writing new codes to fix the bugs in the mobile application.
Historians spent decades attempting to crack the complex codes used in the diplomat's private correspondence, eventually revealing a hidden network of political alliances.
Countable when referring to specific systems or passwords; uncountable when referring to computer programming instructions in a general sense.