What does this word mean?

He found out the truth and was surprised.

He is really knowledgeable and always teaches us new information.

At my house, the internet access is very fast.

The Internet of Things is an important technology in modern society.

He works at an Internet cafe every night.

His words were profound, which made me think.

He is majoring in semantics at university.

His words were profound.

His meaningful gaze made me uneasy.