Answer:
An absolute phrase is a type of the phrase which modifies a noun in a sentence, but without being connected to the sentence with a conjunction. An absolute phrase is separated from the rest of the sentence by a comma, and if we remove the phrase the sentence won't lose its original meaning.
e.g. Her luggage has been packed, Sarah went to the airport.
We create an absolute sentence when we want to add some unnecessary detail to our sentence, but without changing its original meaning. In the example above, the first part of the sentence represents the absolute phrase, while the second part of the sentence contains the important information - that Sarah went to the airport.
