Conviction  

Noun | kuhn-vik-shuhn
a firm belief in something

Convey  

Verb | kuhn-vey
to pass on or transfer (information)

Conventional  

Adjective | kuhn-ven-shuh-nl
abiding by accepted standards

Controversial  

Adjective | kon-truh-vur-shuhl
highly debatable and causing contention

Contradict  

Verb | kon-truh-dikt
to be in contrast with

Contend  

Verb | kuhn-tend
to maintain or assert (an opinion)

Contemplate  

Verb | kon-tuhm-pleyt
to think deeply about

Constitute  

Verb | kon-sti-toot
to form or compose (part of) something