code: def is_currency(text):
      text_lower = text.lower()
      if text in _currency_words:
          return True
      for char in text:
          if unicodedata.category(char) != "Sc":
              return False
      return True
  
label_desc: Use image node_id 2 for calling a global function with example usage: is_currency(text) and returns: True, True, False