Ad or Add?

So what's the difference between "ad" and "add"?

Ad

      

    

Ad = advertisement = a picture, short film, etc. that tells people about a product, service or job. 

Examples:

• "We put an ad in the newspaper."
• "He doesn't like to see ads on TV."
• "This is an ad for a new English course."

Add

Add = to put something together with something else --> +. 

Examples:

• "Please add some sugar to the tea."
• "Do you want me to add your name to the list?"
• "Add 3 and 4, and you get 7."

In summary, an "ad" is an advertisement, and "to add" is to put something with something else.

Quiz

Which of the following sentences is incorrect?

1. Did you see the new ad?
2. We have nothing to ad.
3. They add something to the water. 
4. Can you add a few bucks?

Answer:http://www.really-learn-english.com/quiz-ad-or-add.html