yes,ever sence 1706.
Détendre, though in conversation most French people will use RELAXER, which is not really French, but what the hell.
There are various online translators that you can use. You type in an English word and it will translate it to the French word. You can also use an English to French dictionary.
"French" is an English word. The Italians use "Francese" for French.
French use the same word, 'surf'
Very many French people use the same word, but said like computurrs. The correct word for a computer is un ordinateur, sometimes shortened to ordo.
People sometimes say "Pardon my French" if they use a swear word unintentionally.
football, like in the United Kingdom. Use "football américain" if you want French people to think of what Americans call football.The French word for it is football. The French do not translate the word football and just directly say le football when they are talking about football.
The game takes a second to learn and a lifetime to master.
la prospérité is the French word for prosperity.
discipline (fem.) is a French word as well.
Towns people are 'les citadins' in French. That can be use as a singular too (un citadin, une citadine)
'fioune' is not a proper French word. Some rare occurences of 'fioune' can be found on the net in conversations between young people, who use it in the sense of 'good', but the word has not spread.