shag vs ass

shag and ass both are nouns.

Word	Noun	Adjective	Verb	Adverb
shag	Yes	No	Yes	No
ass	Yes	No	No	No

As nouns, shag and ass are synonyms defined as:

shag (noun)	ass (noun)
a lively dance step consisting of hopping on each foot in turn	slang for sexual intercourse
slang for sexual intercourse	hardy and sure-footed animal smaller and with longer ears than the horse
a fabric with long coarse nap	the fleshy part of the human body that you sit on
a matted tangle of hair or fiber	a pompous fool
a strong coarse tobacco that has been shredded

shag (verb)	ass (verb)
dance the shag