Perbedaan antara Upgrade dan Update Blackberry [Firmware atau Software Blackberry]

Today I want to clarify a mistake I've seen in many reviews and many high class webpages who commit this error write some updates that upgrade is an update, here I leave a brief definition to differentiate one from the another.
Upgrade: Usually when you say upgrade, refers to a new Upgrade of a program example of a 1.0 to 2.0, This Upgrade includes new features which generally must pay a

• Twitter
• Facebook
• Google
• Tumblr
• Pinterest