Corona is a pandemic, What is noun

• Corona is a pandemic .What is the noun in this sentence. 
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• In this sentence "Corona is a pandemic". Corona is Noun in this sentence. Because Corona is name of a disease. And Any naming word is also Noun. 
• Pandemic , Adjective-of a disease, 
• Existing in almost all of an area or in almost all of a group of a people, animals or plants. In some parts of the word malaria is still pandemic. 
• Noun, a pandemic disease., a pandemic of influenza , an influenza pandemic
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