prodigal vs spender

prodigal and spender both are nouns.

Word	Noun	Adjective	Verb	Adverb
prodigal	Yes	Yes	No	No
spender	Yes	No	No	No

As nouns, spender is a hyponym of prodigal; that is, spender is a word with a more specific, narrower meaning than prodigal:

Other hyponyms of prodigal include scattergood, spend-all, spendthrift, waster, wastrel.

prodigal (noun)	spender (noun)
a recklessly extravagant consumer	someone who spends money to purchase goods or services
	someone who spends money prodigally

prodigal (adjective)	spender (adjective)
recklessly wasteful