This is the 645th most frequent Armenian word.
արսեն
"Արսեն" (Arsen) is an Armenian male given name, equivalent to "Arsenius," meaning "virile" or "male."
In this sentence, 'Arsen' is a proper noun, used as a subject (a person's name).
Առսենը եկավ երեկ երեկոյան։
Arsen came last evening.
Here, 'Arsen' remains a proper noun, used in an imperative sentence to indicate someone to meet.
Խնդրում եմ, ծանոթացեք Առսենի հետ։
Please, meet Arsen.
In this example, 'Arsen' is also a proper noun, showing possession ('Arsen's ideas').