The famous 19th century English poet Robert Browning was not a particularly worldly fellow and got it into his head that the word "twat" referred to a nun's headgear. Later he wrote a poem that needs a rhyme for bats in the context of religious folk arriving for prayer and he picked "twats", - then since he was an important English writer and this word was unfamiliar to them (or at least they had no citations for it) the editors of the Oxford English Dictionary asked him about it, and discovered his error. Oops. You're never going to make a mistake that'll be as famous as Browning's, so you're fine.

I also was thrown off by the word module. I said to myself, unless he is talking about modulo I have no idea what that is.

The Module Learning With Rounding (MLWR) and Module Learning With Errors (MLWE) problems are used for a couple of the round-two candidates in NIST's Post-Quantum cryptography contest.

Which makes it more confusing. Modules aren't first/second year university math.