mew vs miaow

mew and miaow both are nouns.

Word	Noun	Adjective	Verb	Adverb
mew	Yes	No	Yes	No
miaow	Yes	No	Yes	No

As nouns, mew and miaow are synonyms defined as:

Other synonyms of mew include meow, miaou, miaul.

mew (noun)	miaow (noun)
the common gull of Eurasia and northeastern North America	the sound made by a cat (or any sound resembling this)
the sound made by a cat (or any sound resembling this)

mew (verb)	miaow (verb)
cry like a cat	make a cat-like sound
utter a high-pitched cry, as of seagulls