Most people also don’t know the difference between a medication allergy and an adverse reaction, either.
What’s the difference?
I had a scary reaction to penicillin once, though only after being on it for days...
Most doctor’s office personnel (including the doctors themselves) don’t distinguish between the two either - I know this from experience. After a point the intellectual laziness just gets to be tiresome and one goes with the flow so that it is at least documented in a way that something that causes life threatening reactions doesn’t get prescribed.
I also try to tell doctors about certain migraine food triggers (because many meds have some of mine in them as derivatives or additives). They chalk these up to allergies as well, even when I know better.