that are . . .
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
hickory/pecan/walnut family Juglandaceae
:

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

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plant terminology