ottawa

As a proper noun ottawa

is ottawa.

As a letter d is

the fourth letter of the.

As a numeral d is

cardinal number five hundred (500).

As a symbol d is

deuterium, when it needs to be distinguished from ordinary hydrogen.

As proper nouns the difference between toronto and ottawa

is that toronto is the provincial capital of Ontario, Canada while Ottawa is an Algonquian people closely related to the Ojibwe; also spelt Ottowa.

As a noun Ottawa is

a member of the Ottawa people.