1.
slogan; motto; catchphrase
A short, memorable phrase used to promote an idea, product, organization, or movement. Used in advertising, politics, education, and workplace campaigns.
From English "slogan." Very commonly used in Japanese for organizational mottos, school mottos, workplace safety campaigns, and political messaging.
In Japanese schools, students often create class slogans (学級スローガン) at the start of the year. Companies and factories frequently display safety slogans (安全スローガン).