RichThesaurus
echoic
vs
onomatopoetic
echoic
adj
Imitative of a sound; onomatopoeic.
Of or pertaining to an echo
onomatopoetic
adj
Synonym of onomatopoeic
How often have the words
echoic
and
onomatopoetic
occurred in a corpus of books?
(source:
Google Ngram Viewer
)