Is there a difference between chilling and refrigeration

what do these two terms actually entail?

Chilling is a general term for making something colder: you could do that by simply putting it in ice.

Refrigeration implies that some kind of machine is used, such as a freezer or refrigerator.
Technically, it means that a refrigerant is used, which is what makes refrigerators and freezers work, but simply spraying something with refrigerant would make it colder too...

I guess it just depends on how specific you want to be?