poor vs miserable

poor is a noun but miserable is not a noun.

Word	Noun	Adjective	Verb	Adverb
poor	Yes	Yes	No	No
miserable	No	Yes	No	No

As adjectives, poor and miserable are synonyms defined as:

Other synonyms of poor include hapless, misfortunate, pathetic, piteous, pitiable, pitiful, wretched.

poor (noun)	miserable (noun)
people without possessions or wealth (considered as a group)

poor (adjective)	miserable (adjective)
having little money or few possessions	of the most contemptible kind
lacking in quality or substances	of very poor quality or condition
characterized by or indicating poverty	contemptibly small in amount
of insufficient quantity to meet a need	characterized by physical misery
deserving or inciting pity	deserving or inciting pity
	very unhappy; full of misery