Americanism vs formulation

Americanism and formulation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Americanism	Yes	No	No	No
formulation	Yes	No	No	No

As nouns, formulation is a hypernym of Americanism; that is, formulation is a word with a broader meaning than Americanism:

Americanism: an expression that is characteristic of English as spoken by Americans
formulation: the style of expressing yourself

Other hypernyms of Americanism include expression.

Americanism (noun)	formulation (noun)
a custom that is peculiar to the United States or its citizens	inventing or contriving an idea or explanation and formulating it mentally
loyalty to the United States and its institutions	the style of expressing yourself
an expression that is characteristic of English as spoken by Americans	a substance prepared according to a formula