o       capitalisation

o       caption

o       central idea

o       centralisation

o       change agent

o       charisma

o       check for errors

o       citation

o       closed-ended question

o           closing line

o       code of ethics

o       coherence

o       collaborative speech

o       collaborative style

o       colon

o       comma

o       commitment

o       common noun

o       communication

o           communication between departments

o       communication channel

o       communication climate

o       communication competence

o       communication flow

o       communications network

o       communication skills

o       community

o       comparison

o       competitive style

o       complaint letter

o       complex sentence

o       complimentary close

o       composition process

o       compromising style

o       computer assisted visual aids

o       computer graphics

o       computer-aided design

o       Computer-Mediated Communication (CMC)

o       computerised databases

o       conclude

o       concluding sentence

o       conclusion

o       concrete word

o       conference call

o       confidential

o       confidentiality

o       conflicting idea

o       conflict-resolution interview

o       conformity

o       congeniality

o       congratulation

o       connotation

o       connotative words

o       consensus

o       content

o       contents of the letter

o       conversation

o       copy

o       copyright infringement

o       copyright

o       cordiality

o       corporate culture

o       correct in terms of grammar

o       correction symbol

o       correlation

o       correspondence

o       correspondence on methods and instruments of payment

o       correspondent

o       counterculture

o       courteous tone

o       cover letter

o       credibility

o       credit a source

o       crisis

o       crisis communication

o       criteria

o       criticism

o       cross-cultural communication

o       cross-cultural interaction

o       cultural bias

o       cultural adaptation

o       cultural imperialism

o       cultural mainstream

o       culture

o       culture shock