So my bath mat is "mine" because I own the house and had to buy it myself, but yours isn't because it's rented?
Because if we can cut that out then yeah, now I own far fewer things. It seems like a weird distinction to make.
If you're renting on a standard long term lease - not short term rental, and it isn't furnished with them, yes they're yours because you bought them.
It's up to you what you want to "count", but toiletries are like petty cash. Pots/Pans can have realistic value, and the rabbit hole for them goes deep from cheap iron, stainless steel, ikea standard purchase, etc.
The idea is to take a break, catalog what you have and go from there. You can catalog 1000+ items and just get rid of ten but then you know "oh just ten items were fluff" vs not knowing or getting rid of 200.
The idea is the exercise.
You don't have to look for some technical workaround to some exact definition here, and pedantically arguing about descriptive terms can get tiring real quick.
Maybe you're not trying to be pedantic and are coming from a place of curiosity, and I do apologize for my tone if that's the case. It is coming off as sounding a little "debate-bro" though.
Same with the cars.
I wouldn’t count all my dinner plates and cutlery as “possessions” as such, but I’d count my good knives.