Here are the matches for the words and their definitions:
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Peer Review - A process in which experts in a field evaluate the quality and validity of a researcher's work before it is published.
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Scientific Method - A systematic process used to investigate phenomena, acquire new knowledge, or correct and integrate previous knowledge through observation and experimentation.
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Alchemy - An early branch of natural philosophy and protochemistry that aimed to transform base metals into gold and discover the elixir of life.
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Pseudoscience - A collection of beliefs or practices mistakenly regarded as being based on the scientific method.
You can match them accordingly!