a caption or catchphrase?

[higurashi]

Hello,
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?
Thank you,
Higurashi

[Tdol]

I'd use 'slogan'. A caption would be underneath a picture and a catchphrase is a line used by a comedian or TV personality as a signature phrase.

[higurashi]

Thank you, Tdol.

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?

Thank you,
Higurashi

[Tdol]

If it's a one-off, then it could be a caption, IMO.