What is the difference between a proposition and a slogan?

The difference is as follows:

A slogan or slogan is a memorable motto or propaganda sentence used in political, social, commercial, military or religious fields, mainly Used to repeatedly express a concept or goal. There are countless types of slogans, ranging from written to chanting, Zen to popular.

Many times their simple rhetorical features leave little room for imagination for details, so they are often used as social expressions of a unified purpose rather than mapping for a specific target. However, in the Taiwanese television industry in recent years, the slogan has been interpreted as a meme, and has been misused and even abused.

Advocate: advocate; support; put forward opinions on a certain action.