mug vs chump

mug and chump both are nouns.

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

As nouns, mug and chump are synonyms defined as:

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

mug (noun)	chump (noun)
with handle and usually cylindrical	a person who is gullible and easy to take advantage of
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
the quantity that can be held in a mug

mug (verb)	chump (verb)
To stare awkwardly
rob at gunpoint or with the threat of violence