Tramline vs. Trayline: What's the Difference?

A streetcar line.

A system of food preparation, used in hospitals, in which trays move along an assembly line.

(railroading) The rails that a tram runs on.

Either of the two pairs of sidelines marked on a tennis court which mark the outside of the singles and doubles playing areas.

(film) A scratch on a film, usually vertical, that extends through multiple frames.

The track on which trams or streetcars run