It's a name used for describing a person, doesn't matter if their name is actually Juno or not, who will be always lovable to someone and will stay there for them.
Person A: But you're such a Juno.. I love you <3 Person B: Thank you so much, I love you too <3
Juno is a fighter. She will attack at any given moment. Never ever mess with alpha Juno. She eats toes and possibly eyes. You will never see a Juno in the wild, practically only in museums.
Juno is a toechopper. She has the most ferocious growl you have ever heard and will attack at any given moment. Juno fights like no other. Juno is probably a street cat. It is super rare to see a Juno out in the wild, practically only in museums.