oldsmobile

As a proper noun oldsmobile

is an american car brand belonging to gm.

As a noun old is

age.

As a noun peanut

is a legume resembling a nut, the fruit of the plant species: Arachis hypogaea.

As a verb peanut

is to pull on somebody's tie as a prank, causing the knot to tighten.

As a proper noun Oldsmobile is

an American car brand belonging to GM.

As proper nouns the difference between purple and oldsmobile

is that purple is (rare) while oldsmobile is an american car brand belonging to gm.