
der Buchautor
book author
A person who writes books professionally or as a hobby; an author of books.
Der bekannte Buchautor hält eine Lesung aus seinem neuesten Roman.
The well-known book author is giving a reading from his latest novel.
book author
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book author
A person who writes books professionally or as a hobby; an author of books.
Der bekannte Buchautor hält eine Lesung aus seinem neuesten Roman.
The well-known book author is giving a reading from his latest novel.
'Buchautor' (book author) is a compound noun made up of 'das Buch' (book) and 'der Autor' (author). So it literally refers to a person who writes books.
Er träumt davon, eines Tages ein erfolgreicher Buchautor zu sein.
He dreams of being a successful book author one day.
The component 'Buch-' (book) serves to specify the type of author. This pattern is very productive in German, as seen in words like 'Drehbuchautor' (screenwriter, for films) or 'Fachbuchautor' (specialist/nonfiction author).
Sie ist eine bekannte Kinderbuchautorin.
She is a well-known children's book author.
Certain activities are often associated with a 'Buchautor' (book author). Typical phrases are: 'eine Lesung halten' (to give a reading), 'sein neues Buch vorstellen' (to present one's new book), or 'ein Interview geben' (to give an interview).
Nächste Woche hält der Buchautor eine Lesung in der Stadtbibliothek.
Next week, the book author is giving a reading at the city library.
writer
Schriftsteller and Buchautor can refer to the same person when they write literary books. Schriftsteller emphasizes writing literature as a profession and also includes poems or essays; Buchautor explicitly refers to writing books, including as a hobby.

Der Buchautor schreibt in seiner Freizeit an einem neuen Roman.
The book author is writing a new novel in his spare time.
Der Schriftsteller arbeitet beruflich an einem neuen Roman.
The writer is working professionally on a new novel.