Fad and Meme

Fad noun - A practice or interest that is very popular for a short time.

Meme and fad are semantically related In some cases you can use "Meme" instead a noun "Fad".

Meme noun - A cultural unit (an idea or value or pattern of behavior) that is passed from one person to another by non-genetic means (as by imitation).

Fad and meme are semantically related in cultural item repeatedly transmitted topic. You can use "Fad" instead a noun "Meme".