The 'pseudonym' group
These nouns refer to a false name. They are used as normal count nouns.
His classic, A Grief Observed, was first published under a pseudonym, the author's identity only being revealed after his death.
Name is always used with words which make the meaning more specific, and can be used to refer to a genuine name.
alias assumed name name pen name pseudonym stage name
In order to pay the rent, she penned two romantic sagas under the name of Caroline Harvey.
He also registered at a hotel room under his own name.