Formal:
* 法语 (fǎ yǔ) - This is the most common and literal translation, meaning "French language."
* 法国语 (fǎ guó yǔ) - This means "French language," specifically emphasizing the country of France.
Informal:
* 法语 (fǎ yǔ) - This is also used informally, but can be shortened to just 法 (fǎ).
* 法国人 (fǎ guó rén) - This means "French person" and is used when referring to people from France.
For the language specifically:
* 法语 (fǎ yǔ) is the most common.
* 法文 (fǎ wén) is a less common, but acceptable, alternative.
For the country:
* 法国 (fǎ guó) is the standard way to say "France."
It's important to consider the context and your intended meaning when choosing the appropriate word.