verbal learning is the one .based on verbal grounds and the vest example can be ,while delivering a lecture.as learning process is going on thereby.
probability learning is learning in which the its not confirmed that either the process of learning is taking place successfully or not .there is a probability based learning,for example when a teacher is not sure whether his students have got the whole thing ,he wants them to or not yet?
telling you by the way ,you dont need these to cram two types of learning in detail,just having an idea will be sufficient.