HamiltonSquare said:The plant needing an ID has red bristles on the stems and the leaves are alternate.
To me they look alternate on the left but those on the branches on the right seem more opposite.
Daisy I think the leaves are too rounded to be thornless honey locust (which also doesn't have the red bristles HamiltonSquare mentioned). I just went and picked a leaf off my thornless honey locust. The shape of leaflets on the ID plant look more like Robinia, but are there any other possibilities?
Thornless honey locust leaf: