shopper vs shopaholic

shopper and shopaholic both are nouns.

Word	Noun	Adjective	Verb	Adverb
shopper	Yes	No	No	No
shopaholic	Yes	No	No	No

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

Other hyponyms of shopper include bargain hunter.

shopper (noun)	shopaholic (noun)
someone who visits stores in search of articles to buy	a compulsive shopper
a commercial agent who shops at the competitor's store in order to compare their prices and merchandise with those of the store that employs her