northern pin oak vs jack oak

northern pin oak and jack oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
northern pin oak	Yes	No	No	No
jack oak	Yes	No	No	No

As nouns, northern pin oak and jack oak are synonyms defined as:

northern pin oak and jack oak: small to medium deciduous oak of east central North America; leaves have sharply pointed lobes

Other synonyms of northern pin oak include Quercus ellipsoidalis.

northern pin oak (noun)	jack oak (noun)
small to medium deciduous oak of east central North America; leaves have sharply pointed lobes	small to medium deciduous oak of east central North America; leaves have sharply pointed lobes
	a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets