I haven't had much success with this lately but I'm a glutton for punishment so I'll take a crack at it. It looks just like the invasive Mimosa ornamental yard tree I got a few months ago.
I think WalNOT. Lol. Unless its some funky variation. Either way it'll get used. Well worth the beech I got. Not much beech but better than none. Easiest scrounge I ever had. Saw it across the street when I dropped the boy off at practice. Picked it up while waiting for him. Backed right up to the pile in a church parking lot.
Was there any walnuts, husks laying around? I was working near a massive bw today. Thought about taking a pic, because it might be 50+” dbh.