En (Cyrillic) different from Η
Form
The capital Cyrillic letter En looks exactly the same as the capital Latin letter H but, as with most Cyrillic letters, the lowercase form is simply a smaller version of the uppercase. Rather than from the Greek letter Eta, from which Latin H originated, the Cyrillic letter En ⟨Н⟩ was derived from the Greek letter Nu. By exception, the Romanian Cyrillic alphabet used N and ɴ, instead of Н and н. The confusion between the two characters forms part of the plot of the Agatha Christie novel Murder on the Orient Express.