The Neolithic period is also called the New Stone Age, it took place in the late 19th century B.C. This period was characterized by the use of stone tools whichg were shaped by polishing or grinding. Other important aspects of Neolithic were the magalithic architecture and the spread of agricultural practices. This made it possoble to humans to adap sedentary ways of living, domesticating animals and more plants.
A metal knife would not be found in this period, they were invented during the next one called the Bronze Age. Here, copper metallurgy was introduced making the use of good part of stone technology obsolete.
The best option would be that "metal knives" would not have <span>been available during the Neolithic period, since this was past the stone age, when the other items would have been readily available. </span>
The first Spanish conquistadors came to North America in 1519, finding the region with Native American tribes, like the Spanish conquistador in South America, they all were looking for wealth rather than new homes.
In general, yes it is true that Latin is more exact and precise than Greek, mostly because of the lettering system and alphabet, which is more condensed than Greek.