An essential relative clause provides necessary, defining information about the noun. On the other hand, non‐ essential relative clauses provide additional, non‐necessary information about the noun.

Nonessential words and phrases are elements of a sentence which do not contain information essential to the meaning of the sentence as a whole. Jan, the second of three children, always feels left out ...

WASHINGTON — The General Services Administration has asked another federal agency to either terminate or justify all of its “non-essential ... typically include clauses allowing the government ...

In a Thursday letter acting GSA administrator Stephen Ehikian said the GSA “has taken the first steps in a Government-wide ...