Q. Are these any differences between an introduction and a conclusion paragraphs? What are the differences?
Yes, there are some differences.
The introduction paragraph introduces the topic of your paper. The paragraph starts with some background information which leads to the purpose of the writing. It also provides an outline of what will be discussed in the body of the essay or report.
The conclusion paragraph restates the thesis statement of the essay (your opinion on the essay topic) or purpose of the report. It provides a summary of the discussion in the body paragraphs.
Both are around 10% of the word count each.