Make Your Editor Cry: Add vs. Ad

Make Your Editor Cry:  Add vs. Ad

Add conventionally functions as an abbreviation of the word addition. Otherwise, by itself, add is a verb meaning either to calculate the total of multiple elements (addition), or to expand or increase with an addition.

Ad functions as an abbreviation for the word advertisement. The word has born a few other senses in its history, but these rarely or never used these days.

Examples:

Incorrect:

Why don’t you ad some wood to the fire.
Nike’s stock fell by 2.5% after the Colin Kaepernick add
aired in 2018, forcing Nike to take a knee.

Correct:

Why don’t you add some wood to the fire.
Nike’s stock fell by 2.5% after the Colin Kaepernick ad
aired in 2018, forcing Nike to take a knee.