This is the 9890th most frequent Catalan word.
monografia
A detailed written study or discussion on a single specialized subject.
In this sentence, "monografia" refers to a written academic report focusing on a single subject, specifically the architectural contributions of Gaudí.
Vaig escriure una monografia sobre Gaudí.
I wrote a monograph about Gaudí.
Here, "monografies" is used to denote scholarly written works by different authors, studied as part of academic research.
Durant el curs, hem estudiat diverses monografies d'autors famosos.
During the course, we studied various monographs of famous authors.
In this context, "monografia" implies a single, significant scholarly work that received recognition or accolades from an academic institution.