Cambodian Hokkien is a type of language that is spoken by people who have roots in Cambodia and China. Imagine if you have a friend who speaks English at home, but their family came from another country, and they also speak another language at home. Cambodian Hokkien is like that second language that some people speak at home along with Khmer.
The Hokkien part of the name comes from the fact that this language is a variety of Min Nan, which is a type of Chinese language. So when people refer to Cambodian Hokkien, they're talking about a Chinese language that has been adapted and mixed with Cambodian culture.
Now, imagine that you have a toy box with different colored building blocks. You have red blocks, blue blocks, green blocks, and yellow blocks. Cambodian Hokkien is like a toy that has been built using many different building blocks. One of the building blocks used to create this language is Chinese, but there are also pieces of Khmer (the official language of Cambodia) and other languages mixed in.
So when people speak Cambodian Hokkien, they're using a language that has been created by taking different pieces of other languages and putting them together like a puzzle. It's similar to how you might create a new toy by mixing different blocks from your toy box.