core ⪢⪢
the center of something
 core ⪢⪢
The rings of a tree start forming at its core.
◎◎◎ coronavirus ⪢⪢
Coronaviruses are a large group of viruses. They consist of a core of genetic material surrounded by an envelope with protein spikes. This gives it the appearance of a crown. 'Crown' in Latin is called 'corona' and that's how these viruses get their name.
○○○ Athens ⪢⪢
_____ and the Aegean Sea that surrounds it is the country's core. #Greece #grammar
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