Woodrow said:Often the when a person says the Shahdah in front of witnesses it is referred to as the Kalimah, or the "Saying of the word"
"Kalimah" is not "saying of the word" but sentence/words arangement. And not only for ayaah in Qur'an, sentences in our words or in texts in books/newspapers are Kalimah. But there are special sentences that called "Kalimah Thoyibah" (beautiful sentences) like ayaah in Qur'an.It does refer to Talk, or more specificaly a calligraphic rendering of a Surah, Hadith, or Shahada.
Here is a typical one:
Often the when a person says the Shahdah in front of witnesses it is referred to as the Kalimah, or the "Saying of the word"