nucleolus vs nucleole

nucleolus and nucleole both are nouns.

Word	Noun	Adjective	Verb	Adverb
nucleolus	Yes	No	No	No
nucleole	Yes	No	No	No

As nouns, nucleolus and nucleole are synonyms defined as:

nucleolus and nucleole: a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis

nucleolus (noun)	nucleole (noun)
a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis	a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis