From my understanding, spring rolls are the general term for what is created when you roll ingredients inside a thin wrapper. Summer or salad rolls are a type of spring roll, usually associated with Vietnamese cuisine and fresh, not fried. They're often served with a peanut dipping sauce. Because these rolls are both spring rolls and summer rolls, you'll find me using both terms in this post. Thanks to Lane of Cooking with Lane for explaining the difference much better than I can - you can find her full informative article here.