As nouns the difference between manila and iowa
is that
manila is fiber made from abaca (manila hemp), used to make ropes and manila paper while
iowa is one of the native americans formerly occupying the region now included in the state of iowa.
As an adjective manila
is of or pertaining to manila or manilla, the capital of the philippines; made in, or exported from, that city.
As a proper noun iowa is
a capital: des moines.