The pen names of famous writers are often well-kept secrets.

Family names are important for family identity.

Noms de guerre are often used by fighters to conceal their true identity.

Personal names are important in a culture.

Domain names are important for online visibility.

Time names are important for planning our activities.

They chose original stage names for their music group.

Code names are used to protect the identity of secret agents.

Brand names are important for brand recognition.

First names are important in family tradition.