7A: Talk about Personal Communication

What is the main difference between defining and non-defining relative clauses?Defining relative clauses give extra information, while non-defining relative clauses are necessary to identify the noun.Defining relative clauses provide essential information to identify the noun, while non-defining relative clauses give extra, non-essential information.Non-defining relative clauses use "who," while defining relative clauses use "that."There is no difference between the two.