monocyte vs monoblast

monocyte and monoblast both are nouns.

Word	Noun	Adjective	Verb	Adverb
monocyte	Yes	No	No	No
monoblast	Yes	No	No	No

As nouns, monoblast is a hyponym of monocyte; that is, monoblast is a word with a more specific, narrower meaning than monocyte:

monocyte: a type of granular leukocyte that functions in the ingestion of bacteria
monoblast: a large immature monocyte normally found in bone marrow

monocyte (noun)	monoblast (noun)
a type of granular leukocyte that functions in the ingestion of bacteria	a large immature monocyte normally found in bone marrow