mug vs gull

mug and gull both are nouns.

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

As nouns, mug and gull are synonyms defined as:

Other synonyms of mug include chump, fall guy, fool, mark, patsy, soft touch, sucker.

mug (noun)	gull (noun)
with handle and usually cylindrical	mostly white aquatic bird having long pointed wings and short legs
the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)	a person who is gullible and easy to take advantage of
a person who is gullible and easy to take advantage of
the quantity that can be held in a mug

mug (verb)	gull (verb)
To stare awkwardly	fool or hoax
rob at gunpoint or with the threat of violence	make a fool or dupe of