Code and Key

Similar meaning words

Code noun - A collection or system of rules of conduct.

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Key is a synonym for code in thing topic. In some cases you can use "Key" instead a noun "Code", when it comes to topics like cipher.

Nearby Words: coded, coding, coder

Key noun - An explanatory list of the symbols on a map or chart.

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Code is a synonym for key in thing topic. You can use "Code" instead a noun "Key", if it concerns topics such as guide, answer.

Nearby Words: keyed, keyboard, keying

old	old code	old key
safe	safe code	safe key
special	special code	special key
particular	particular code	particular key
Other adjectives: similar, specific, right, certain, original, correct, proper, single, simple, actual, real, wrong, important, secret, necessary, ancient, new, unique, hidden, different, genetic.

As only a few require a traditional key hunt, the rest require either inputting a code and activating a mechanism.

Source: Video Game / Another Code
Something similar in Lois McMaster Bujold's Mirror Dance, although here's it's a code-key embedded in a ring, not a biometric.

Source: Borrowed Biometric Bypass
Under Mantis' suggestion, Liquid decides to manipulate Snake into using the PAL key to activate the code to override the nuke's safety precautions instead.

Source: Videogame / Metal Gear Solid

Cite this Source

Key and Code. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/code/key

Code & Key. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/code/key>.

Key or Code. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/code/key.

Google Ngram Viewer shows how "code" and "key" have occurred on timeline