Lovage? Here is a link that might be useful: Levisticum officinale, lovage

Looks like some type of Ash tree. Fraxinus is the genus name, there are several species of it. We have Green Ash in my area.

Solanum carolinense is in the tomato/nightshade family (unrelated to the Urtica dioica nettle), and the flowers look similar (but white to pale purple). It bears a marble-sized berry (green turning yellow). It's difficult to kill by pulling, as it will grow back from the root. I've had fairly good results spraying with Roundup (or generic glyphosate), though it seems to take more than one application.

Palmer amaranth, Amaranthus palmeri, I'm pretty sure. Look it up. Supposedly one of the most aggressive weeds of agricultural crops. I see it popping up in soybean fields in New Jersey. But amaranths can be tough to I.d. If you don't have a specimen.