I came across this website - definefinance.com - the other day, and it seems to me that it would be a great resource for people trying to break into the finance industry. Terminology is key when it comes to finance, but you need to master it before you even begin working in the industry because it will certainly come up in your interview.
This will also be helpful for professionals already working in finance. It can help you more presicely describe your background to others (maybe even potential employers) and brush up on terminology you might not have used in a while.
Either way, it's a website worth checking out.
-The Finance Whisperer