Right. My husband is intelligent, able to process information well. However, he also has ADHD and can't remember things for shit. He's also not highly educated, though, so not the best example. Still, you can be intelligent without being able to retain information is the overall point.
I think in elementary school they refer to that as “bright.”
“Oh little Billy is one of the brightest students.”
Fast forward, little Billy graduated college, moved to Philly, works as a barista, knows the complete lore of 40k but doesn’t use their degree in any meaningful way.
Intelligence represents how clever you are and what you know, basically how quick your mind is at improvising solutions.
Wisdom is your awareness of your surroundings as well as how much of that you retain and can access on demand without further stimulation.
Int 18 Wis 8 would be like a professor of advances sciences or engineering (doesn't matter what field) who can give indepth breakdowns of things in their field work and expected outcomes of things related to that field. But that same professor can never remember where they put their glasses, lab notes, the homework or remember anyone's name without serious attempts to grill it into their long term memory.
The closest concept is severly deficient autobiographical memory (SDAM), a lifelong inability to vividly recollect or re-experience personal past events from a first-person perspective.
70% of these comments show the commenter was not, in fact, smart in understanding the post, but knew enough words to comment something that's unrelated