I read a sentence from an article, it said"a good ad is a catchy slogan, or an unusual image, which could be easily remembered".
And my question is:
In my opinion, a catchy slogan, or an unusual image could be a good ad. But can we say a good ad "is" a catchy slogan, or an unusual image.
Thanks a lot.
Maybe I didn't make myself clearly understood, my question is: can we say
a good ad = a catchy slogan, or a good ad = a unusual image, because I think that a slogan & an image are included in an ad.
in other words, i think "an ad ＞ a slogan or an image", so maybe we couldn't say ad "is" a slogan or an image. Is that right??? or...