1, there are different positions: footnotes are actually at the bottom of each page, and references are part of the main content of the paper and appear at the end of the paper.

2. Different functions: Footnotes are a supplement to the content of the paper, ensuring readers to understand the relevant content more clearly during reading, and references are part of the content of the paper. Through the discussion and analysis of the references, the main contents and viewpoints of the paper are further explained, and the results obtained by comparing the references are different or the same.