I tend to use the terms addiction and dependence interchangeably, because everybody seems to have different views on what the difference is, and some recommend abandoning the terms.
https://www.addictioncenter.com/addicti ... ependence/
I don't understand the difference, if there is one at all, so to my mind they both refer to a condition where discontinuing a drug (or whatever) would be uncomfortable or harmful. I suppose the effects of withdrawal can be divided into physical and psychological, but the result may be much the same - discontinuation causes problems that didn't exist before the drug was first taken. So for any particular drug, it would be important to know the likely nature and severity of those problems, and to develop a safe, effective, and (hopefully) comfortable exit strategy.
If longterm use of the drug had no adverse effects and the continued supply of the drug was secure, there'd be no reason to discontinue it anyway, but I don't suppose there are many drugs like that.
As for antidepressants, many sources say they're usually not addictive:
https://www.findatopdoc.com/Questions/w ... -addictive
But for all that, discontinuation can often lead to problems:
https://en.wikipedia.org/wiki/Antidepre ... n_syndrome
So it might be dangerously misleading to simply ask your doctor "are these addictive?" because the answer would probably be "no." So I think it's better to drop the term "addictive" and just ask "might there be any problems with discontinuation?" And I wouldn't just take the doctor's word for it, because you might not get the full and frank answer you want.