toby vs mug

toby and mug both are nouns.

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

As nouns, mug is a hypernym of toby; that is, mug is a word with a broader meaning than toby:

toby: a drinking mug in the shape of a stout man wearing a three-cornered hat
mug: with handle and usually cylindrical

toby (noun)	mug (noun)
a drinking mug in the shape of a stout man wearing a three-cornered hat	with handle and usually cylindrical
	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

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