This is the 805th most frequent Armenian word.
սարգսյանը
"Սարգսյանը" is the Armenian surname "Sargsyan."
In this sentence, 'Սարգսյանը' is used as a proper noun indicating a person's last name.
Սարգսյանը բարեկամս է։
Sargsyan is my friend.
Here, 'Սարգսյանը' is again a proper noun, referring to an individual who partook in the mentioned event.
Սարգսյանը մասնակցեց ժողովին։
Sargsyan attended the meeting.
In this sentence, 'Սարգսյանին' is the dative case of the proper noun, indicating the indirect object of the verb.