Carya illinoinsis vs Carya illinoensis

Carya illinoinsis and Carya illinoensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carya illinoinsis	Yes	No	No	No
Carya illinoensis	Yes	No	No	No

As nouns, Carya illinoinsis and Carya illinoensis are synonyms defined as:

Carya illinoinsis and Carya illinoensis: tree of southern United States and Mexico cultivated for its nuts

Other synonyms of Carya illinoinsis include pecan, pecan tree.

Carya illinoinsis (noun)	Carya illinoensis (noun)
tree of southern United States and Mexico cultivated for its nuts	tree of southern United States and Mexico cultivated for its nuts