This is the 5th most frequent Armenian word.
հետ
"հետ" - "with" or "after" (context-dependent).
In this sentence, the word 'հետ' denotes accompaniment or being with someone.
Ես գնացի ընկերոջ հետ։
I went with my friend.
In this context, 'հետ' is used to indicate dealing or interacting with something.
Աշխատիր այս խնդրի հետ։
Work on this problem.
Here, 'հետ' implies conversing or engaging communication with someone.