Terms, even scientific and engineering ones, seem to become progressively more misused over time. One generation in time is enough to make Sir Isaac Newton roll in his grave.
For example:
Ballistically, the term "drift" pertains ONLY to SPIN induced movement from the line of sight.
"Deflection" refers to movement induced ONLY by wind.
Yet, even so - called experts, advertising, manuals, etc. often use "wind drift" to describe deflection. Our archers see such and repeat it. When politely counseled, the misusers now use "spin drift" as a convenience.
Arrow spine is NOT arrow spline. They are different.
Paradox is widely used, incorrectly, to describe the shaft bending around the riser. It's defined/used incorrectly in some training/coaching manuals.
Most simply don't care! Part of this may be due to archers never bothering to "read" more than pulp magazines. One, highly respected sporting magazine used to send every submission to a panel of PhD experts. Over 90% of the articles were rejected for incorrect information that the authors would not correct. Those articles, containing the uncorrected errors, usually found their way into other magazines.
As one gray beard once shared: The average person doesn't want complete answers if it contradicts what they believe. "Don't ever try to teach them anything; most get mad."