What part of speech shows relationship noun or pronoun to rest the sentence?

The part of speech that shows the relationship between a noun or pronoun and the rest of the sentence is a preposition.

Here's why:

* Prepositions connect nouns or pronouns (called objects of the preposition) to other words in the sentence, showing their relationship in terms of location, time, direction, or other concepts.

Examples:

* The book is on the table. ("on" shows the location of the book)

* I went to the store before dinner. ("before" shows the time relationship)

* He walked through the door. ("through" shows the direction)

* She is responsible for the project. ("for" shows responsibility)

Let me know if you'd like more examples or want to explore other parts of speech!