Corn is the archaic usage for kernal.
I was brought up with Scripture from the KJV, so seeing the word corn for kernal is quite familiar to me.
It seems anyone who has some yhears under his or her bealt will have had this same exposure. Some folks have not, especially young er folks who feel the language of the KJV is almost foreign.
Prsonally I use the word kernel for that word corn, but that particular usage is also comfortable for me.
I suppose most people with a normal education level have read Shakespeare, so it would seem that KJV would be much easier to understand, but what do I know??