Hi Zarapata,
Thanks for asking your question, Here I have tried to give your question in short.

Definition of Knowledge / What is Knowledge?

Knowledge, simply to say, has originated form the word Know. When anyone starts knowing one thing after another about something, he/she starts his journey to knowledge. Indeed man’s life on the earth is a journey to gain world knowledge. Then knowledge is the collective form of various learning. We can compare knowledge to a tree and all the branches of the tree are various learning. Each branch is one kind of particular learning for example, one knows how to catch fish. And it is one of the branches of the whole tree. It depends on the person how many learning’s he/she has and thereby builds up his/her knowledge tree.

In a word we can say that knowledge is a familiarity with someone or something, which can include facts, information, descriptions, or skills acquired through experience or education.
Different mans have different opinion about knowledge. So lets we see Some Quotes About Knowledge –
– See more definition of knowledge.
Plato says about knowledge: “…Knowledge is the food of the soul.”
He also says that….. “Human behavior flows from three main sources: desire, emotion, and knowledge.”
“Opinion is the medium between knowledge and ignorance.”- Plato
“A good decision is based on knowledge and not on numbers.” Plato
“Knowledge which is acquired under compulsion obtains no hold on the mind.” Plato
According to Socrates “To know, is to know that you know nothing. That is the meaning of true knowledge.”
“True knowledge exists in knowing that you know nothing.” Socrates
“The only true wisdom is in knowing you know nothing.” ― Socrates
“The one exclusive sign of thorough knowledge is the power of teaching.”- Aristotle

See more at: Knowledge World

What is Knowledge World? or What is the world of knowledge ?

World of knowledge is a kind of world from where people can gathers all kinds of knowledge. Our world is full of various kinds of knowledge. All kinds of people cannot gain this it. Only a few people can gain this. As for example we can say the name of Kazi Nazrul Islam, He was not an educated person but his writings inspiring us still now. When he was a student of class nine, His poem was published in graduate level books. Think deeply about his power of knowledge. We go to school, college, or university to gather knowledge. A boy of class nine’s writing read university student. He gained his it from this knowledge world.
See more details at: What is Knowledge World

Thanks you for your questions.