Hibernate ManyToOne relationship not by primary key?

Question

Java

Hello everyone, I just started to study Hibernate, I have one question.
In all examples, the connection of objects (ManyToOne and OneToMany) occurs according to the primary key, usually long ID, I found on the Internet that uuid can also be the primary key.
Actually a question:
long id; //This is the primary key
UUID guid; // how to bind a set by this key without making it primary?

@Entity
public class Dictionary {
   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;

    @Column
    UUID guid = UUID.randomUUID(); //Как привязать DictionaryContent к этому идентификатору, не делая его первичным ключом?

    @OneToMany(cascade = CascadeType.ALL,orphanRemoval = true)
    @JoinColumn(name = "dictionary_id")
    private List<DictionaryContent> contentList;
}

@Entity 
public class DictionaryContent {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;


    @Column
    UUID guid = UUID.randomUUID();

    @ManyToOne
    private Dictionary dictionary;

}