Relative clauses are sometimes divided into "restrictive" and "non-restrictive" types:
Anonymous
- The restrictive type supplies additional information which tells us more specifically what the head noun refers to ("the bread that I ate"). In other words, it "restricts" (narrows) the range of things the bread could refer to.
Anonymous
- The non-restrictive type simply adds some additional, non-essential information about the head noun: ("the bread, which I ate"). It does not "restrict" (or narrow) the range of things the head noun could refer to.
