Final answer:
Given information is what has already been collected, while unknown information needs to be found through further research or data collection.
Step-by-step explanation:
In research, the information that has already been collected is known as given or background information. This includes data that has already been gathered and documented. On the other hand, the information that still needs to be found is referred to as unknown or required information. This is the information that needs to be obtained through further data collection or research.
To find the required information, you can consult various sources such as books, articles, research papers, databases, websites, interviews, surveys, and experiments. The most suitable source for finding the required information depends on the nature of the research question and the topic you are investigating. For example, if you are researching historical facts, books, primary sources, and archival materials might be the best sources.