This is the 174th most frequent Greek word.
σύστημα
The Greek word "σύστημα" means "system" in English, referring to a set of connected elements forming a complex whole.
Here, 'σύστημα' refers to a functional unit (heating system) within a larger setup (the building).
Το σύστημα θέρμανσης χρειάζεται συντήρηση.
The heating system needs maintenance.
In this example, 'σύστημα' describes an organizational structure, specifically the educational frameworks of a country.
Το εκπαιδευτικό σύστημα της χώρας εξετάζεται από ειδικούς.
The educational system of the country is being reviewed by experts.
'Σύστημα' is used here to refer to a set of interconnected protocols or tools (communication methods for a team).