der Grundbegriff
basic concept
A central, fundamental concept that forms the basis for understanding a field, a theory, or a science.
Freiheit und Gerechtigkeit sind Grundbegriffe der Demokratie.
Freedom and justice are basic concepts of democracy.

basic concept
Loading your saved state.
basic concept
A central, fundamental concept that forms the basis for understanding a field, a theory, or a science.
Freiheit und Gerechtigkeit sind Grundbegriffe der Demokratie.
Freedom and justice are basic concepts of democracy.

The word is made up of 'Grund-' (basic/foundation) and 'Begriff' (concept). Here, 'Grund' means 'Basis' (basis) or 'Fundament' (foundation). A Grundbegriff is therefore literally a fundamental concept on which a field of knowledge is built.
Ohne die Grundbegriffe zu verstehen, kann man die Theorie nicht anwenden.
Without understanding the basic concepts, one cannot apply the theory.
'Grundbegriff' (basic concept) is a typical word from academic, scientific, or philosophical texts. It is used to name the most important concepts of a discipline.
Im ersten Semester lernen die Studierenden die Grundbegriffe der Betriebswirtschaftslehre.
In the first semester, students learn the basic concepts of business administration.
'Grundbegriff' (basic concept) is very often used with a genitive that names the field or theory. Examples are 'die Grundbegriffe der Physik' (the basic concepts of physics), 'die Grundbegriffe einer Theorie' (the basic concepts of a theory), or 'die Grundbegriffe des Rechts' (the basic concepts of law).
Er erklärte uns die Grundbegriffe der modernen Kunst.
He explained the basic concepts of modern art to us.
term
'Terminus' and 'Grundbegriff' can both be an important concept in a field or theory. However, 'Terminus' emphasizes that it is a clearly defined technical term. 'Grundbegriff' emphasizes that the concept is especially central and serves as a basis for further understanding. So not every Terminus is a Grundbegriff. The words can be confused when a technical term is also very important. In that case, both can fit, but with a different focus.

„Energie“ ist ein Grundbegriff der Physik.
'Energy' is a basic concept in physics.
Der Terminus „Demokratie“ wird im Unterricht genau erklärt.
The term 'democracy' is explained in detail in class.