This is the 955th most frequent Chinese word.
科學
"科學" means "science."
In this sentence, '科學' serves as a field of study, emphasizing its academic aspect.
學習科學可以幫助我們理解世界。
Studying science can help us understand the world.
Here, '科學' is used adjectivally in '不科學', meaning 'not scientific', to describe the approach.
這種方法不科學，可能導致錯誤的結論。
This method is not scientific and may lead to incorrect conclusions.
Here, '科學' is used as a subject noun meaning 'science'.