This is the 655th most frequent Armenian word.
երեկոյան
"Evening" or "in the evening."
In this sentence, 'երեկոյան' is used as an adverb of time, indicating when the action of walking occurs.
Ես երեկոյան հաճախ զբոսնում եմ այգում։
I often take a walk in the park in the evening.
Here, 'երեկոյան' specifies the time of day when the return action took place.
Նա երեկոյան դասարանից վրդովված վերադարձավ։
She returned upset from the classroom in the evening.
In this case, 'երեկոյան' is used as an adjective describing the meeting time as occurring in the evening.