Communication

Chokwe language

Chosen-ciphertext attack

Chuvash language

Ciphertext

Ciphertext: encrypted data and its role in cryptography

Ciphertext-only attack

Ciphertext-only attack: definition, methods, history and defenses

Circumflex

Citizens band radio

Citizens band radio (CB radio): overview, operation, and uses

Clapper

Clapper: bell striker, percussion device, film slate and stone bridge

Clapper Post

Claro

Classified advertising

Cleartext

Cleartext: meaning, risks, and distinctions from plaintext and ciphertext

Click

Click (onomatopoeia)

Code

Code name

Code-switching

Collaboration

Collaboration: Definition, Types, Roles, and Best Practices

Collect call

Colloquialism

Colloquial Language: Everyday Expressions and Informal Speech

Colloquy (software)

Colon (punctuation)

Colon (punctuation): form, function, and usage

Color depth

Color of the day (police)

Coming out

Coming out (revealing sexual orientation or gender identity)

Commentary

Common Brittonic

Common Brittonic (Old Brythonic): overview, history and legacy

Commonly misspelled words

Communication

Communication protocol

Communication Theory of Secrecy Systems

Communications Act

Communications satellite

Communications-based train control

Communications-based Train Control (CBTC): Principles, Components, and Applications

Comparison

Comparison: evaluating similarities and differences

Comparison of American and British English

Complex sentence

Complex sentence (grammar): definition, structure, examples

Compound (linguistics)

Compromise

Computational linguistics

Conflation

Conflation (conceptual merging and identity confusion)

Confusion and diffusion

Confusion and Diffusion in Cryptography

Conjunction

Conjunction (grammar)

Connection

Connection (concept)

Consensus

Consonant

Consonant mutation

Consonant mutation: grammatical alternation of initial consonants

Constructed language

Constructed script

Constructed script (conscript, neography)