codger vs old codger

codger and old codger both are nouns.

Word	Noun	Adjective	Verb	Adverb
codger	Yes	No	No	No
old codger	Yes	No	No	No

As nouns, codger and old codger are synonyms defined as:

codger and old codger: used affectionately to refer to an eccentric but amusing old man

codger (noun)	old codger (noun)
used affectionately to refer to an eccentric but amusing old man	used affectionately to refer to an eccentric but amusing old man