bank draft vs banker's draft

bank draft and banker's draft both are nouns.

Word	Noun	Adjective	Verb	Adverb
bank draft	Yes	No	No	No
banker's draft	Yes	No	No	No

As nouns, bank draft and banker's draft are synonyms defined as:

bank draft and banker's draft: a draft drawn by a bank against funds deposited in another bank

bank draft (noun)	banker's draft (noun)
a draft drawn by a bank against funds deposited in another bank	a draft drawn by a bank against funds deposited in another bank