Roll or Role?

Role

The noun role means an actor's portrayal of a character or a job or function (of a person or thing). Examples:

• Teddy was totally convincing in the role of Shylock.

• What's your role onboard this aircraft?

• The thermostat's role is to keep the temperature below 200 degrees so the casing does not melt.

Roll

The word roll has several meanings: To move by rotating or gather by rolling.

• Roll the hay bale down the hill.

• Roll over a bit. You're hogging the bed.

• Roll your sleeves up and roll me the best cigar ever.

To move on wheels.

• The skateboarders rolled past the park attendant, and he did not say a word.

A list.

• Please check the nominal roll to ensure we're all present.

To start.

• Roll the cameras.

• Roll the credits.

A small round piece of bread (i.e., a bread roll).

• Would you like butter on your roll?