progeny vs child

progeny and child both are nouns.

Word	Noun	Adjective	Verb	Adverb
progeny	Yes	No	No	No
child	Yes	No	No	No

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

progeny (noun)	child (noun)
the immediate descendants of a person	a young person of either sex
	a human offspring (son or daughter) of any age
	an immature childish person
	a member of a clan or tribe