"Multi-billionaire" Natural Recordings by Native Speakers
A multi-billionaire is a very wealthy person who has a net worth of over one billion units of a country's currency, such as dollars or euros. The term "multi-billionaire" specifically refers to someone whose net worth is in the tens or even hundreds of billions of dollars or euros.
To mull something means to think deeply and carefully about it, often in a slow and deliberate way. It can also refer to brewing or stewing something, like mulled wine. For example, "She'll mull over the pros and cons before making a decision."
Multeity refers to a state of being numerous or abundant, often used to describe a large or countless number of things. It can also imply a high degree of diversity or variety within a group or collection. In a broader sense, multeity might also describe a society or culture that is comprised of many different parts, ethnicities, or ideologies, existing together in some way.