These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
I Am Not Shazam: Sort of—the Spelljammer is a legendary Living Ship, spelljamming helms are the phlebotinum that powers space travel, and spelljammers can refer to ships (usually just "'jamming vessels") or sailors (as opposed to landlubbers, er, groundlings). Or only helmsmen.
Jeff Grubb: In the game we used it to describe the act of moving through space magically. And it was the class of ship that moved through space. And it was the proper name of the legendary Spelljammer, a supposed Flying Dutchman/White Whale. It was a noun, a proper noun, and a verb. If I could have made it an adverb I would have done that as well.
Unfortunate Implications: The Aperusa are "SpaceGypsies" and, thusly, are a misogynistic pack of cowardly thieving con artists who are incapable of sincere faith in any deity, instead loudly professing worship for the god whose priest has most recently performed something beneficial for the tribe, only to convert the instant another cleric does so.