Answer: People: Language and Call System
Dog: Call System
Gorilla: Language and Call System
Explanation:
Call systems are a form of verbal communication that do not involve the use of structured words and sentences. An example in humans is crying or groaning. Other primates have a wider range of call systems than human beings, and even include communicating sexual interest.
Language uses characters and sounds which can be recorded and is usually standardized among its users.
While dogs can only use call systems, humans and gorillas can use both language and call systems. Gorillas are now being trained to speak and understand human language.