Probable
Part of speech: adjective
Definition: Likely to be true. Likely to happen. Considered most likely to be true among several choices.
Possible
Part of speech: adjective
Definition: Able but not certain to happen; not impossible.Capable of being done or achieved; feasible.Being considered, e.g. for a position.
Part of speech: noun
Definition: A possible oneA possible choice, notably someone being considered for a position.A particular event that may happen.