- Secretary of the Interior, Interior Secretary - the person who holds the secretaryship of the Interior Department; "President Taylor appointed Thomas Ewing as the first Secretary of the Interior"
--1 is a kind of secretary
- Secretary of the Interior, Interior Secretary - the position of the head of the Department of the Interior; "the position of Interior Secretary was created in 1849"
--2 is a kind of secretaryship
--2 is a member of United States Cabinet, US Cabinet