Barkeep vs Bartender - What's the difference?

Bartender is a synonym of barkeep.

is that barkeep is a bartender while bartender is one who tends a bar or pub; a person preparing and serving drinks at a bar.

(en noun)

(informal) a bartender

* 1873 : Bret Harte, Mrs. Skaggs's Husbands

I sez to the barkeep' o' the hotel, "Show me the biggest doctor here."

* 1999 : Frasier (TV, episode 6.13)

Barkeep , a couple of beers here, please?

* barkeeper, bar-keeper

(wikipedia bartender)

* (l)

(en noun)

One who tends a bar or pub; a person preparing]] and [[serve, serving drinks at a bar.

* barkeep * barkeeper * mixologist

* barmaid * barman

* barback * barista