with …

stem and twigs=hairy (like antler velvet) visible from several steps back;  leaf injury exudes milky juice;  no taller than 7 m (23 ft)
staghorn sumac  Rhus typhina  or
stem and twigs=not noticeably hairy from several steps back;                    no milky juice from leaf injury;  various heights :

Stem and twigs=not noticeably hairy from several steps back;  no milky juice from leaf injury;  various heights

leaves=small (<18 cm) (<7 in), 9–19 leaflets=small   (<4 cm)  (<1½ in)  or

leaves=med. (∼20 cm) (∼8 in), 13–15 leaflets=medium (∼5 cm) (∼2 in)  or

leaves=large (∼25 cm) (∼10 in),   5–9 leaflets=large (∼8 cm) (∼3 in)  or
leaves=large (>20 cm) (>8 in),           leaflets=large (4–20 cm) (1½–8 in);  nuts on or under tree
butternut/hickory/pecan/walnut  family Juglandaceae :

Leaves=small (<18 cm) (<7 in), 9–19 leaflets=small (<4 cm) (<1½ in)

leaflet tips=∧ pointed, undersurface=​hairless
🏔 American mountain ash  Sorbus americana
leaflet tips=∩ blunt,     undersurface=​hairy
🇪🇺 🏔 European mountain ash  Sorbus aucuparia

Leaves=medium (∼20 cm) (∼8 in), 13–15 leaflets=medium (∼5 cm) (∼2 in)

leaflet ▲▲ teeth=very large (visible from 3 steps back), irregular (almost looks ▲▴▲▴ doubly-toothed)
sumac  genus Rhus

Leaves=large (∼25 cm) (∼10 in),   5–9 leaflets=large (∼8 cm) (∼3 in)

leaflet ▲▲ teeth each tipped by a ⍋ stiff sharp spine[?];  evergreen;  🍒︎ ripe fruits dark blue
Oregon grape  Mahonia aquifolium

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🏠︎ 🌳︎ broadleaves, ╟ alternate, 🌿︎ compound