"Primary sources (or primary research) presents the immediate results of original research activities and/or new scientific discoveries. It often includes hypotheses, experiments, analysis of data collected in the field or laboratory and a conclusion. Primary sources are original materials/information on which other research is based."
From “Primary Sources.” Primary, Secondary, and Tertiary Sources in the Health Sciences, libguides.umn.edu/c.php?g=986651. Accessed 6 June 2023.
Secondary sources are sources that analyze and review primary sources within them, such as books, literature reviews, magazine articles, and encyclopedias. They are created after the primary source by someone who did not participate in the experiment or study that is reported on in the original primary source.