I have heard people state that the use of certain words in the Book of Mormon are anachronistic and, therefore, proof that the book isn't what Joseph claimed it to be. One of those words is "synagogue" - since that particular word was not coined until after the time period discussed in the Book of Mormon.
Nearly all of these charges are non-starters for me, for a very simple reason - and I will use "synagogue" as my primary example in this post:
"Synagogue" was the word Joseph knew to use for a place where Jews met to worship. It's probably the only word in his vocabulary that corresponded to that concept. In other words, there probably wasn't any other choice for him.
Given his own description of the translation / transmission process, when his available vocabulary is taken into consideration, many of these issues disappear for me.