* Switzerland has four official languages: German, French, Italian, and Romansh. They all have equal status.
* French is the official language of one of Switzerland's 26 cantons: The canton of Vaud and several others are primarily French-speaking.
* French is spoken by a significant portion of the population: Around 23% of Swiss citizens speak French as their primary language.
* French is widely used in various contexts: It's used in education, administration, media, and business, particularly in the western part of the country.
Therefore, French is not a secondary language in Switzerland; it's an official language with equal status to the other three. It's widely used in various aspects of Swiss life and represents a significant part of the country's linguistic and cultural diversity.