mew gull vs gull

mew gull and gull both are nouns.

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

As nouns, gull is a hypernym of mew gull; that is, gull is a word with a broader meaning than mew gull:

Other hypernyms of mew gull include sea gull, seagull.

mew gull (noun)	gull (noun)
the common gull of Eurasia and northeastern North America	mostly white aquatic bird having long pointed wings and short legs
	a person who is gullible and easy to take advantage of

mew gull (verb)	gull (verb)
	fool or hoax
	make a fool or dupe of