I think the usual definition is closer to “a plant that REALLY wants to be in a space you don’t want it to be, and refuses to leave once it’s in”.
For example, I think it’s fairly uncontroversial to call grass a weed. Sure, we like our lawns, but they really want to spread anywhere they can. They are more aggressive than dandelions, and the only reason we hate dandelions more is their taproot.
I think the usual definition is closer to “a plant that REALLY wants to be in a space you don’t want it to be, and refuses to leave once it’s in”.
For example, I think it’s fairly uncontroversial to call grass a weed. Sure, we like our lawns, but they really want to spread anywhere they can. They are more aggressive than dandelions, and the only reason we hate dandelions more is their taproot.