echo vs reproduce

echo is a noun but reproduce is not a noun.

Word	Noun	Adjective	Verb	Adverb
echo	Yes	No	Yes	No
reproduce	No	No	Yes	No

As verbs, reproduce is a hyponym of echo; that is, reproduce is a word with a more specific, narrower meaning than echo:

Other hyponyms of echo include recite, cuckoo, reecho, parrot, regurgitate.

echo (noun)	reproduce (noun)
an imitation or repetition
the repetition of a sound resulting from reflection of the sound waves
a reflected television or radio or radar beam
a close parallel of a feeling, idea, style, etc.
a reply that repeats what has just been said

echo (verb)	reproduce (verb)
to say again or imitate	have offspring or produce more individuals of a given animal or plant
ring or echo with sound	repeat after memorization
bring to mind	make a copy or equivalent of
	recreate a sound, image, idea, mood, atmosphere, etc.