Dictionaries can be organized in different ways. Here's why:
* Different Languages: Dictionaries for different languages will have different first words in the "R" section.
* Variations in Entries: Even within the same language, different dictionaries might include different words.
* Ordering: Dictionaries might order words alphabetically using different rules, such as considering diacritical marks or ignoring them.
To find the first word in the "R" section of a dictionary, you need to consult the specific dictionary you're using.