An important difference from the_content() is that get_the_content() does not pass the content through the ‘the_content’. This means that get_the_content() will not auto-embed videos or expand shortcodes, among other things.
If you find yourself annoyed with formatting of the content, more specifically the added p-tags that WordPress puts into the content that you didn’t. Just use
and you will remove those tags.
get_the_content();