Well, if you are stumped, it’s no wonder.  The one on the left is tall meadow rue (with columbine-like foliage), and the right picture is a small early columbine.  The columbine plants often get quite ‘bunched up’ foliage with the burst of flowers in the middle.  The meadow rue grows much taller and has a different type of flower.  Both are great pollinators.  Meadow rue needs shade and the columbine can grow in sun or shade.

More info  on the Meadow rue….meadow rue articlefinegardening2011 (2)