Answer:
It depends on the virus as far as appearence goes, but in the naming i can help you a bit better. If there was a new virus discovered, you wouldn't name it "fluffy" because no one would know it's characteristics or features. What scientists do is they use Latin, so that people can identify what the virus is. For example, the corona virus. Corona means "crown" in latin, and it is named that way because it's shape forms a crown.
I hope this helps :)
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