What do you call the sentence (or maybe it is not even a sentence) which is on the ads, such as "just do it!" or "Aim high, Airforce"?
Is this a caption, a catchphrase, or title?
I understand that Nike's one and Air Force's will be called as 'slogan'.
However, if it is like, "this aroma will invite you to the dreamland...." ( I just made up the sentence), do you still call it a slogan? Is there any words that describe the phrase which are made for the advertisement?