This is the 3177th most frequent German word.
einkauf
"Purchase" or "shopping."
Here, 'Einkauf' is used as a noun that refers to the act of shopping or purchasing goods.
Ich mache einen Einkauf im Supermarkt.
I am doing shopping in the supermarket.
In this sentence, 'Einkauf' again as a noun implies the process or event of shopping, this time referring to its characteristic.
Der Einkauf ist heute besonders stressig.
Today's shopping is particularly stressful.
In this example, 'Einkauf' is utilized to denote the items or the activity associated with shopping in a planned manner for a specific time.