Distinguishing between "invite" (as a noun) and "invitation" (also as a noun).

A few minutes ago, I mentioned having used "an invite" to join Tildes.

As soon as the words left my lips, I realized something interesting about the word "invite" being used as a noun.

While most people would probably assume that "an invite" was verbal shorthand for "an invitation," that doesn't seem to be the case. In fact, the two terms actually appear to have discrete (albeit related) meanings that haven't officially been codified yet: An "invitation" is either an action taken to welcome someone or a means of offering that welcome (like a physical card or a verbal statement), whereas an "invite" is a means of accessing an area to which one has been invited. This distinction is most apparent in digital environments, where one might require an access code or a link in order to enter a given site.

Think of it like the difference between asking someone to come into your house and providing them with a key. The former would be an invitation, whereas the latter would be an invite... or at least, as close to an invite as one can get without straining the metaphor. Furthermore, an invite will always include an invitation (even if it's a tacit one), whereas an invitation won't necessarily include an invite.

This is one of those cases wherein the phrase "Language evolves!" actually applies, because using the word "invite" as a noun (with the above definition) meets all of the necessary criteria for correctness: It doesn't violate any existing conventions, it adds complexity or clarity, and it arises from previously codified structures. As such, well... the next time folks are provided with invites, they can use them as part of their invitations.