Both are broadleaf deciduous.

Where are these growing?
The bottom pic might be sweet shrub (Calycanthus sp.)

What's the growth habit like?
Sweet shrubs here colonize.

Top pic looks like maybe a pear (callery?)

Agree that the first image looks like a Callery Pear (Pyrus calleryana), with some pretty wicked spines/spurs in there.

Not sure on the second one; it is about the worst time to ID when buds are breaking yet leaves are not fulling unfurled. I don't think it can be Calycanthus sp. - Sweetshrub has opposite arrangement of leaves/buds, while the image shows alternate arrangement.