Barkeep vs. Bartender: What's the Difference?

Barkeep and Bartender Definitions
Barkeep
A person who owns or operates a bar for the sale of alcoholic beverages.
Bartender
One who mixes and serves alcoholic drinks at a bar. Also called barkeeper.
Barkeep
See bartender.
Bartender
One who tends a bar or pub; a person preparing and serving drinks at a bar. 19
Barkeep
(informal) a bartender
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Bartender
A barkeeper.
Barkeep
An employee who mixes and serves alcoholic drinks at a bar
Bartender
An employee who mixes and serves alcoholic drinks at a bar