Where would Joseph Smith have learned the difference between arrows and darts?

In Jarom 1:8 we read:

And we multiplied exceedingly, and spread upon the face of the land, and became exceedingly rich in gold, and in silver, and in precious things, and in fine workmanship of wood, in buildings, and in machinery, and also in iron and copper, and brass and steel, making all manner of tools of every kind to till the ground, and weapons of war—yea, the sharp pointed arrow, and the quiver, and the dart, and the javelin, and all preparations for war.

Why did Joseph Smith mention both the dart and javelin? What is the difference between the two and how would he know there was a difference?

Bruce E. Dale and Brian Dale explain:

The Book of Mormon and The Maya specifically contrast fighting with bows and arrows or spears as being different from fighting with “darts.” What experience or knowledge did Joseph Smith have of fighting with darts? How many educated people, even today, would know about fighting with a “dart-thrower” or atlatl? So this correspondence is specific, detailed and unusual.
– Bruce E. Dale and Brian Dale – Joseph Smith: The World’s Greatest Guesser (A Bayesian Statistical Analysis of Positive and Negative Correspondences between the Book of Mormon and The Maya)

Would we expect Joseph with his limited education to include both arrows and darts in his descriptions of weapons?

See:

Bruce E. Dale and Brian Dale – Joseph Smith: The World’s Greatest Guesser (A Bayesian Statistical Analysis of Positive and Negative Correspondences between the Book of Mormon and The Maya)

Add