ragtag vs ragtag and bobtail

ragtag and ragtag and bobtail both are nouns.

Word	Noun	Adjective	Verb	Adverb
ragtag	Yes	No	No	No
ragtag and bobtail	Yes	No	No	No

As nouns, ragtag and ragtag and bobtail are synonyms defined as:

Other synonyms of ragtag include rabble, riffraff.

ragtag (noun)	ragtag and bobtail (noun)
disparaging terms for the common people	disparaging terms for the common people