This is the 15th most frequent Armenian word.
կողմից
"կողմից" - "by" or "on behalf of"
In this sentence, "կողմից" (by) indicates the doer of the action in a formal context.
Հիշեցումը արվել է ուսուցչի կողմից։
The reminder was given by the teacher.
Here, "կողմից" (by) specifies the institution responsible for carrying out the directive.
Հրամանը իրականցվել է պետական մարմնի կողմից։
The order was executed by the government body.
Here, "կողմից" (by) denotes the agent who performed the action in a passive construction.