A noun functions as the subject of a sentence or a clause, and as the object of a verb or a preposition.
Examples:
- The update on delays came just as we were leaving home. (subject of the sentence)
- The route that the update recommended was a better choice. (subject of the relative clause)
- We received an update on the report of the protest. (direct object of the verb 'received')
- I have the information for the update. (object of the preposition 'for')
The Word 'update' is also a verb: update, updates, updating, updated.