What is a fund? [closed]

Google definition defines fund as

A sum of money saved or made available for a particular purpose.

However, while I was looking up the definition of a trust fund, Google definition states it is,

A fund consisting of assets belonging to a trust, held by the trustees for the beneficiaries.

So is a fund merely a sum of money, or can also be assets/properties?

Typically, a fund consists of assets that can be directly expressed in some currency—money, I would say—, although its meaning is usually not defined very strictly. So a bank account or a deposit would count. However, the word is very often used more loosely, so don't be surprised to find a fund containing stocks and bonds as well. And a trust fund can be even broader, including any kind of investment that can be sold within a reasonable or expected time, I would say.