Like the other guy said, the stab or elev is an upside down wing. Normal stall is caused by exceeding a certain positive AOA. The tail will stall when you exceed a certain negative AOA. For instance, when you put out 10 degrees of flaps in a 172 remember noticing that the nose wanted to pitch down. obviously all aircraft are different. There is a good nasa video on tail stalls. I reccomend searching for it. Also like the other poster said. Its an upside down wing, so recovery would be opposite of normal. Hope we helped you.