The word "America"

See.

Amerigo Vespucci (March 9, 1451 - February 22, 1512) was an Italian merchant, explorer and cartographer. He played a senior role in two voyages which explored the east coast of South America between 1499 and 1502. On the second of these voyages he discovered that South America extended much further south than previously known by Europeans. This convinced him that this land was part of a new continent, a bold contention at a time when other European explorers crossing the Atlantic Ocean thought they were reaching Asia.

Statue at the Uffizi, Florence

Vespucci's voyages became widely known in Europe after two accounts attributed to him were published between 1502 and 1504.^[1] In 1507, Martin Waldseemüller produced a world map on which he named the new continent "America" after Vespucci's first name, Amerigo. In an accompanying book, Waldseemüller published one of the Vespucci accounts, which led to criticisms of Vespucci as trying to usurp Christopher Columbus's glory

Pinguin

Yes you are right and that's amazing! In South America we don't have native grapes so I assumed there were not native grapes in the Western Hemisphere, and I was wrong

Many species of grapevines exist and these include:

• Vitis vinifera, the European winemaking grapevine. Native to virtually all of mainland Europe.
• Vitis labrusca, the North American table and grape juice grapevines, sometimes used for wine. Native to the Eastern U.S. and Canada.
• Vitis riparia, a wild vine of North America, sometimes used for winemaking and for jam. Native to the entire Eastern U.S. and north to Quebec.
• Vitis rotundifolia, the muscadines, used for jams and wine. Native to the Southeastern U.S. from Delaware to the Gulf of Mexico.
• Vitis aestivalis, the variety Norton (AKA Cynthiana) is used for winemaking
• Vitis lincecumii (also called Vitis aestivalis or Vitis lincecumii), Vitis berlandieri (also called Vitis cinerea var. helleri), Vitis cinerea, Vitis rupestris are used for making hybrid grapevines and for pest-resistant rootstocks.
• Vitis arizonica A desert grapevine found in the southwestern US that is hardy against extremes of temperature. Can be used for wines.
• Vitis californica A grapevine important to the California wine industry for its rootstock which is able to withstand pests and cooler weather. Native to California and Oregon.
• Vitis vulpina Frost grape. Native to the Midwest east to the coast up through New York.

This is vitus labrusca:

So Vikings knew what they were talking about after all

Then, there still exist a change to discover the real Vinland south of Newfoundland. if so, the post found in Newfoundland could be just a secondary settlement. Any clues of the location you have heared?