cilium vs cell organelle

cilium and cell organelle both are nouns.

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

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

cilium: a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms
cell organelle: a specialized part of a cell; analogous to an organ

Other hypernyms of cilium include cell organ, organelle.

cilium (noun)	cell organelle (noun)
a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms	a specialized part of a cell; analogous to an organ
any of the short curved hairs that grow from the edges of the eyelids