Hi
The symbols for N and R are the same in ancient and modern Greek.
N: Capital Case: Ν Lower Case: ν
R: Capital Case: Ρ Lower Case: ρ
Examples:
Ancient Greek: Νάξος (a Greek island) νεανίας (= young man)
Ρέα (name of a goddess) ράβδος (=stick)
Modern Greek: Νίκος (=Nick) νέος (= young)
Ρένα (a woman name) ρήτορας (= orator)
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Vasiliki Baskou, Instructor/Director, https://learn-greek-online.com.