verbs - Are there any differences between "update" and "upgrade"?

Are there any differences between "update" and "upgrade"?

Answer

If you're talking about software, there is, imo, even though the two do overlap. (A lot depends on the context: I'm assuming a general one below.)

Usually, when you update a software, you apply patches and additional bits and pieces that the seller provides you for free, in theory to keep your copy in line with the official version (which is likely more stable, more secure and may even provide you with some new / better options, functionalities.)

On the other hand, when you upgrade a software, you usually buy / pay extra for a version unavailable for free. Of course, an upgrade serves as an update as well (in most cases.)

An example: say you have an antivirus program that you did not pay for (it being made legally available for free), but which has a commercial version as well: You usually update its database (to keep you safe from newer threats) - but if you upgrade it, it means you pay for an advanced version that gives you extended protection: not just via an updated database but also through extended capabilities (like email-scanning, link-scanning etc that were unavailable in the free version, no matter how up to date your database was.)

(Again, a real lot depends on the context.)