Breakdown of Der Flur ist eng, aber der Balkon ist groß.
Questions & Answers about Der Flur ist eng, aber der Balkon ist groß.
Because both Flur and Balkon are masculine singular nouns in German.
In the nominative singular, the masculine definite article is der:
- der Flur
- der Balkon
This is about grammatical gender, not biological sex. German nouns have to be learned together with their article.
They are both in the nominative case because each one is the subject of its clause:
- Der Flur ist eng.
- Der Balkon ist groß.
In each clause, the subject is the thing that is something.