banker vs cashier

banker and cashier both are nouns.

Word	Noun	Adjective	Verb	Adverb
banker	Yes	No	No	No
cashier	Yes	No	Yes	No

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

Other hyponyms of banker include bank clerk, teller.

banker (noun)	cashier (noun)
a financier who owns or is an executive in a bank	an employee of a bank who receives and pays out money
the person in charge of the bank in a gambling game	a person responsible for receiving payments for goods and services (as in a shop or restaurant)

banker (verb)	cashier (verb)
	discharge with dishonor, as in the army
	discard or do away with