Or, TLDR:ESTJs are dutiful and focus on doing what has to be done. They prefer taking a familiar approach instead of experimenting. Their Ne helps them make predictions but the typical ESTJ is not very future oriented. They prefer dealing with the world around them instead of always looking at the bigger picture.
Despite the stereotypes , according to my experiences ESTJs are actually more playful and humorous when they're with friends than ENTJs (I think it's because of the Ne, however despite the stereotypes, ENTJs usually come across are more serious and professional than ESTJs) .
ENTJs are future oriented. They make predictions and they seem to "read" people with their Ni . My mother is ENTJ and she has the annoying habit to speak for other people assuming she knows what they want to say before they say them . They're also generally very dominant personalities . The ESTJs are dominant too , but the Se makes ENTJs much more brutal.
Also, according to my experiences , while ESTJs are usually very straightforward , ENTJs can be pretty sneaky.
Think about Twyin Lannister (ENTJ) and Robb Stark (ESTJ).