mindmap root((EV)) coeval Having the same age or lasting the same amount of time; contemporary.
🌱Homer's Iliad and Odyssey, probably written around 700 B.C., are coeval with portions of the Hebrew Bible, or Old Testament. 🌳Coeval usually describes things that existed together for a very long time or that originated at the same time in the distant past. Thus, astronomers might speak of one galaxy as being coeval with another, and a period in the history of one civilization might be coeval with a similar period in another. As a noun, however, coeval may describe people as well; so, for example, two artists who lived and worked at the same time might be described as coevals. longevity 1、 A long duration of life.
2、 Length of life; long continuance.
🌱Picasso had a career of remarkable longevity, and was producing plentifully until his death at 91. 🌳As living conditions improve and the science of medicine advances, the longevity of the average American has increased greatly, from about 45 years in 1900 to over 75 years today. But the most impressive human longevity is nothing compared to the 400-year lifespan of an ocean clam found near Iceland, or the 5,000-year lifespan of the bristlecone pine, a tree found in the western U.S. We may use longevity to talk not only about actual lives but also of the useful "life" of things: the life of your car's tires or the shingles on your roof, for example. medieval 1、 Relating to the Middle Ages of European history, from about A.D. 500 to 1500.
2、 Extremely out-of-date.
🌱The great cathedral at Chartres in France, finished in 1220, is a masterpiece of medieval architecture. 🌳With its roots medi-, meaning "middle," and ev-, meaning "age," medieval literally means "of the Middle Ages." In this case, middle means "between the Roman empire and the Renaissance"—that is, after the fall of the great Roman state and before the "rebirth" of culture that we call the Renaissance. This same period used to be called the "Dark Ages," since it was believed that in these years civilization all but vanished. And indeed, for most Europeans in these centuries, it was a time of poverty, famine, plague, and superstition, rather than the age of magic, dazzling swordplay, towering castles, and knights in splendid armor displayed in today's graphic novels and video games. primeval 1、 Having to do with the earliest ages; primitive or ancient.
2、 Existing from the beginning.
🌱When European settlers first arrived in North America, they found vast tracts of primeval forest, seemingly untouched by human influence. 🌳With its prim- prefix, meaning "first," primeval obviously refers to an original age. So the word often suggests the earliest periods in the earth's history. Myths are often stories of the creation of the world and of its primeval beings. The trees in a primeval forest (few of which remain today in most countries) may be 400 years old—not as old as the world, but maybe as old as they ever live to. According to scientists, life on earth began in the protein-rich waters of the primeval seas and swamps, and the decay of their tiny organisms and plant matter over millions of years produced our petroleum and coal.


    EV comes from the Latin aevum,"age" or "lifetime." Though the root occurs in only a few English words, it's related to the Greek aion,"age," from which we get the word eon, meaning "a very long period of time."🌸