What are the differences between the four categories of non-current assets: long-term investments; property, plant, and equipment;

Question:

What are the differences between the four categories of non-current assets: long-term investments; property, plant, and equipment; ; and goodwill?
Intangible Assets
An intangible asset is a resource controlled by an entity without physical substance. Unlike other assets, an intangible asset has no physical existence and you cannot touch it.Types of Intangible Assets and ExamplesSome examples are patented...