echo vs reecho

echo is a noun but reecho is not a noun.

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

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

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

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

Other hyponyms of echo include consonate, bong.

echo (noun)	reecho (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)	reecho (verb)
to say again or imitate	repeat back like an echo
ring or echo with sound	repeat or return an echo again or repeatedly; send (an echo) back
bring to mind	echo repeatedly, echo again and again