Is there a difference between orcs and gobelins in lotr ?
Goblins only appear in The Hobbit afaik. There is a difference between orcs and uruk-hai, and I think the one in the lower left (#7) is an uruk-hai and not an orc.
Goblins also appear in Lotr, the orcs in Moria are goblin orcs. I think the difference is goblin orcs live belowground and mordor orcs above. Uruk-Hai are a new breed by Saruman, combining orcs with the wild men of Rohan through dark sorcery.