No, not nice!! 😂 It’s way more confusing than the difference between FOSS and open-source software.
What if you want to talk about working in open-source software but also want to drop the “software” and abbreviate to just “open-source” (because let’s be real, 90% of open-source stuff is software)?
At that point you’re talking about it like it’s a noun but it’s still technically an adjective for the real noun you decided to drop. 😵💫