Which major dictionary company was the first to name an emoji as its 'Word of the Year', marking a significant milestone in the recognition of visual language in mainstream communication?

The digital age has transformed how language is used in marketing campaigns. One of the most significant developments has been the integration of emoji in brand communication. This linguistic innovation has changed how companies connect with audiences across cultures and demographics. Test your knowledge about this fascinating intersection of linguistics and marketing strategy!

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Oxford Dictionaries (selected the 'Face with Tears of Joy' emoji in 2015)
Merriam-Webster (selected the 'Heart' emoji in 2014)
Cambridge Dictionary (selected the 'Thumbs Up' emoji in 2016)
Collins Dictionary (selected the 'Thinking Face' emoji in 2013)