This is the 637th most frequent French word.
luxembourg
"Luxembourg" refers to a small European country or its capital city.
In this sentence, 'Luxembourg' refers to the country.
Je suis allé au Luxembourg pour mes vacances.
I went to Luxembourg for my vacation.
In this sentence, 'Luxembourg' refers to a famous garden in Paris.
Nous avons visité le jardin du Luxembourg à Paris.
We visited the Luxembourg Garden in Paris.
Here, 'Luxembourg' is used as an adjective (Luxembourgish), describing something pertaining to Luxembourg.