This is the 2543rd most frequent German word.
volkswirtschaft
"Volkswirtschaft" means "national economy" in English.
Here, 'Volkswirtschaft' refers to the entirety of a country's economic system and activities.
Die Volkswirtschaft eines Landes beeinflusst seine Entwicklung.
The economy of a country influences its development.
In this usage, 'Volkswirtschaft' denotes the academic field of economics.
Er studiert Volkswirtschaft an der Universität.
He studies economics at the university.
Here, 'Volkswirtschaft' is used to mean the overall economic conditions and system of a nation affected by policy.