Appositive

An appositive is a noun or a noun phrase, lies next to another noun to rename it or describe it differently. 

Appositive examples, all of which rename intruder:

A lezard, is crawling across the kitchen table.

A large, inquisitive lezard, is crawling across the kitchen table.

A large, inquisitive lezard with big legs, is crawling across the kitchen table.

A large, inquisitive, big-legged lezard that has seen my pot of meal, is crawling across the kitchen table.

Restrictive and Non-restrictive Appositives

Usually, an appositive will only give bonus information that could be removed outwardly, slaying the meaning. Sometimes, however, releasing an appositive will leave you with a question.

If an appositive is necessary for understanding, it is called a restrictive appositive. If it's just demountable bonus information, it's called a non-restrictive appositive. Non-restrictive appositives are invariably offset with commas, dashes or brackets. Restrictive appositives are typically compensated with commas, dashes, or parentheses (round brackets) but not always.

• My cat Lussie will chew your shoes if you leave them there.
• My batch mate Shree found a whelk while fishing for bass.