What's the difference between a facility and a provision for something?
hooshdar, why did you once again ask a question without providing any context? You have been asked many times, and yet context still has to be dragged from you.
If it is so general, why not look them up in a dictionary?
With the question you just posted, the words "facility" and "provision" both have several possible meanings and usages and it is only possible for us to comment on those usages if we know the context that you have in mind.
You may not understand the importance of context, but when you are asked over and over again to provide context for your questions, you should just take note and give context in future.
This is not to contradict ems, but to reinforce her message. Even teacup can depend on context.
"I prefer teacups."
Perhaps you are talking about poodles and not crockery!
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.