A person who writes letters on a regular basis
I wrote to Jenny for a while but she wasn't much of a correspondent
A correspondent based in his or her (or one's) home, neighbourhood, or country, especially one employed to describe events occurring there.
A journalist who reports from a scene of war
A person with whom one corresponds on matters of business, or with whom one has regular business relations.
A person employed to report for a newspaper or broadcasting organization from a particular place abroad
(In the UK) a senior political journalist of a group receiving direct but unattributable briefings from the government
A journalist writing for a newspaper on special events or a special area of interest