This page shows a list of consecutive quadruplets drawn in Powerball, ordered by frequency.
There is no difference between Goblins and Orcs as far as being different species. They are basically the same. If I had to name one difference it would be that Goblins are a type of Orc that has developed more to tunnels and caves, whereas Orcs I think of more patrolling in open spaces, such as the plains of Gorgoroth.
Orc is the form of the name that other races had for this foul people as it was in the language of Rohan. In Sindarin it was orch. Related, no doubt, was the word uruk of the Black Speech, though this was applied as a rule only to the great soldier-orcs that at this time issued from Mordor and Isengard.