cell organelle vs cell organ

cell organelle and cell organ both are nouns.

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

As nouns, cell organelle and cell organ are synonyms defined as:

cell organelle and cell organ: a specialized part of a cell; analogous to an organ

Other synonyms of cell organelle include organelle.

cell organelle (noun)	cell organ (noun)
a specialized part of a cell; analogous to an organ	a specialized part of a cell; analogous to an organ