tavern vs bucket shop

tavern and bucket shop both are nouns.

Word	Noun	Adjective	Verb	Adverb
tavern	Yes	No	No	No
bucket shop	Yes	No	No	No

As nouns, bucket shop is a hyponym of tavern; that is, bucket shop is a word with a more specific, narrower meaning than tavern:

Other hyponyms of tavern include beer garden, gin mill, pothouse, pub, public house, saloon, taphouse, rathskeller, shebeen.

tavern (noun)	bucket shop (noun)
a building with a bar that is licensed to sell alcoholic drinks	(formerly) a cheap saloon selling liquor by the bucket
	an unethical or overly aggressive brokerage firm