poor speller vs good speller

poor speller and good speller both are nouns.

Word	Noun	Adjective	Verb	Adverb
poor speller	Yes	No	No	No
good speller	Yes	No	No	No

As nouns, poor speller and good speller are synonyms defined as:

Other synonyms of poor speller include speller.

poor speller (noun)	good speller (noun)
someone who spells words	someone who spells words