circular, bulletin, notice; see poster.
publicize, declare, announce; see advertise 1.
"placard." YourDictionary, n.d. Web. 14 January 2019. <https://thesaurus.yourdictionary.com/placard>.
placard. (n.d.). Retrieved January 14th, 2019, from https://thesaurus.yourdictionary.com/placard
A usually public posting that conveys a message:
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