sorry vs no-account

sorry is not a noun while no-account is a noun.

Word	Noun	Adjective	Verb	Adverb
sorry	No	Yes	No	No
no-account	Yes	Yes	No	No

As adjectives, sorry and no-account are synonyms defined as:

Other synonyms of sorry include good-for-naught, good-for-nothing, meritless, no-count, no-good.

sorry (noun)	no-account (noun)
	an idle worthless person

sorry (adjective)	no-account (adjective)
feeling or expressing regret or sorrow or a sense of loss over something done or undone	without merit; of little or no value or use
bad; unfortunate
causing dejection
without merit; of little or no value or use