Lots of languages have distinct plural forms for you. When talking to more than one person, the French use vous; the Italians ...
We can demonstrate the link between two nouns either by using possessive forms (the US bank's finance division / the finance division of the US bank) or compound nouns (the US bank finance division).
But be careful! The possessive adjective of a feminine word that starts with either a vowel or a silent h uses the masculine form. Possessive adjectives show whom something or someone belongs to.