An appositive can be used to subordinate ideas true or false

This sentence is true.

Explanation:

A noun or noun phrase which renames the other noun which is immediately near the first noun is known as an appositive. An appositive may be of a single or a combination of words. An appositive is always segregated from the other part of the sentence with a comma. Hence, an appositive can indeed be used to subordinate ideas.