Joe Blow vs Joe Bloggs

Joe Blow and Joe Bloggs both are nouns.

Word	Noun	Adjective	Verb	Adverb
Joe Blow	Yes	No	No	No
Joe Bloggs	Yes	No	No	No

As nouns, Joe Blow and Joe Bloggs are synonyms defined as:

Other synonyms of Joe Blow include John Doe, man in the street.

Joe Blow (noun)	Joe Bloggs (noun)
a hypothetical average man	a hypothetical average man