French is older
While it’s challenging to pinpoint an exact time that French was created, as language is a constantly evolving phenomena, early French can be traced back to Gaul — a region that now includes modern-day France and Belgium. The invasion and cultural amalgamation of the Romans throughout 2nd and 1st century BC bred a distinct local Gallo-Romance tongue that, combined with subsequent Germanic invasions into the country, created what linguists call ‘Old French’, a language that survived until the 14th century.
French, on the other hand, is a spoken language, meaning it’s compiled by the human brain and executed through a combination of respiration, phonation, and articulation. I recommend this article for more details on how speech is produced.
In French, every noun has a gender — masculine or feminine. This affects the pronoun used to describe it and the conjugation of verbs around them. This can be jarring to users of languages that lack explicit object types, like English (where nouns are gender-neutral) or Python.
So, when do I use which?
I truly hope this article helped you understand the differences between these two great languages. If you have anything to add, or disagree, please comment — I’d love to hear feedback.