We can imagine that hiragana(s) & katakana(s) are letters for pronounce words in Japanese. Katakana sometimes be used as a upper case, hiragana be used as lower case.
🈁 is the word ココ(two katakana chars), means 'here', but this word in Japan is normally written in its hiragana style ここ.ここ or ココ pronounced as 'coco'.
