nucleole vs cell organelle

nucleole and cell organelle both are nouns.

Word	Noun	Adjective	Verb	Adverb
nucleole	Yes	No	No	No
cell organelle	Yes	No	No	No

As nouns, cell organelle is a hypernym of nucleole; that is, cell organelle is a word with a broader meaning than nucleole:

nucleole: a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis
cell organelle: a specialized part of a cell; analogous to an organ

Other hypernyms of nucleole include cell organ, organelle.

nucleole (noun)	cell organelle (noun)
a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis	a specialized part of a cell; analogous to an organ