cell division vs miosis

cell division and miosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
cell division	Yes	No	No	No
miosis	Yes	No	No	No

As nouns, miosis is a hyponym of cell division; that is, miosis is a word with a more specific, narrower meaning than cell division:

cell division: the process in reproduction and growth by which a cell divides to form daughter cells
miosis: (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)

Other hyponyms of cell division include amitosis, cleavage, segmentation, meiosis, reduction division, mitosis.

cell division (noun)	miosis (noun)
the process in reproduction and growth by which a cell divides to form daughter cells	reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
	(genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)