cylindrical or pen-like shape a cap a tip for writing a body with a label, logo, or other marking a plunger at the end for retracting the tip a clip or loop for attaching to a pocket or other surface
marker which has cylindrical or pen-like shape marker which is a cap marker which is a tip for writing marker which is a body with a label, logo, or other marking marker which is a plunger at the end for retracting the tip marker which is a clip or loop for attaching to a pocket or other surface