megabank

As nouns the difference between terms and megabank

is that terms is while megabank is (informal) a major bank.

As nouns the difference between megaband and megabank

is that megaband is (music|informal) a particularly successful band while megabank is (informal) a major bank.

As nouns the difference between bank and megabank

is that bank is an institution where one can place and borrow money and take care of financial affairs while megabank is a major bank.

As a verb bank

is to deal with a bank or financial institution.

As an adjective major

is .

As a noun megabank is

(informal) a major bank.