signboard [signboards]+(a board carrying a sign)noun[UK: ˈsaɪn.bɔːd] [US: ˈsaɪn.bɔːrd]
billboard [billboards]+(large advertisement along side of highway)noun[UK: ˈbɪl.bɔːd] [US: ˈbɪl.ˌbɔːrd]
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