|Etymology is the study of historical linguistic change, which occurs due to the development of a particular word or element of a word, often delineating its spread from one language to another and its evolving changes in form and meaning. They're explanations of what our words meant and how they sounded 600 or 2,000 years ago.
Scholarly peer review is the process of subjecting an author's scholarly work, research, or ideas to the scrutiny of others who are experts in the same field, before a paper describing this work is published in a journal. The work may be accepted, considered acceptable with revisions, or rejected. Peer review requires a community of experts in a given (narrowly defined) field, who are qualified and able to perform reasonably impartial review.