sad vs sorry

sad and sorry both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sad	No	Yes	No	No
sorry	No	Yes	No	No

As adjectives, sad and sorry are synonyms defined as:

Other synonyms of sad include deplorable, distressing, lamentable, pitiful.

sad (adjective)	sorry (adjective)
experiencing or showing sorrow or unhappiness	feeling or expressing regret or sorrow or a sense of loss over something done or undone
bad; unfortunate	bad; unfortunate
of things that make you feel sad	causing dejection
	without merit; of little or no value or use