The term "Farcy" appears to be a typo. It's likely a misspelling of Farsi, which is another name for the Persian language.
In recent decades, the term "Farsi" has gained traction in English, often used to specifically refer to the standard Persian spoken in Iran. However, "Persian" remains the more commonly used term overall.
Therefore, to be clear:
- Farsi = Persian
Both terms refer to the same language, which is widely spoken in Iran, Afghanistan (where it's known as Dari), and Tajikistan (where it's known as Tajik).