This is the 78th most frequent Armenian word.
վարչապետի
"Prime Minister's" (possessive form).
In this sentence, "վարչապետի" (varchapeti) is a possessive form, indicating that the decision belongs to the Prime Minister.
Վարչապետի որոշումը շատ կարևոր է։
The Prime Minister's decision is very important.
Here, "վարչապետի" denotes possessive form, specifying the office associated with the Prime Minister.
Նրանք հանդիպեցին վարչապետի գրասենյակում։
They met in the Prime Minister's office.
In this case, "վարչապետի" is used to describe ownership or association of the program with the Prime Minister.