No, it is not.
If we are talking of an aleatory event, and its relative frequency obtained over a large number of trials, yes.
The relative frequency of of an event is one possible measure of its probability.
It is not! It is one measure of probability.
The relative frequency is an estimate of the probability of an event.
It is the empirical or experimental probability.
It is 1.
You need to know the probability of the event in question. Then the expected frequency for that event occurring is that probability times the number of times the experiment was repeated.
When two outcomes have the same probability, they are said to be equally likely. This means that if an experiment or situation were repeated many times, each outcome would occur with the same frequency over the long run. For example, in a fair coin toss, the probability of landing on heads is equal to the probability of landing on tails, both being 50%. Such scenarios are often analyzed in probability theory and statistics to understand random processes.
probability density distribution
Yes
Yes, relative frequency probability uses group information and applies it to single cases.
when a probability experiment is repeated a large number of times, the relative frequency probability of an outcome will approach its theoretical probability.