A free, complimentary ticket or item

• A perk given without charge

To give someone a complimentary item for free

• To cover the cost as a courtesy

A competition or contest, especially informal or abbreviated usage

A comprehensive exam testing broad knowledge in a field

A detailed mockup showing the proposed final layout

• A comprehensive design layout

To accompany a soloist with chords or rhythms in music

Employee compensation, pay, or benefits

• Total remuneration

A computer, especially a desktop

• Also, the field of computing