The generic term is server
The waitress served the meal efficiently. The patrons left the waitress a good tip.
Kellnerin
hostessserverattendant
No, 'waitress' is feminine. The masculine term is 'waiter.' The usual unisex term is 'server.'
When it is a possessive, use apostrophe. The waitress's coat was stolen. The waitresses' paychecks were cut.
Yes, since the term "waitress" has not yet fallen into general disuse like the term "bartendress", for instance.
Belhop
speedy
Carhop.
Yes, the noun 'waitress' is a common noun, a general word for any female server who waits tables in a restaurant.
Carhop
Similar is an adjective.