This praise of the Tara has been translated into Tibetan from so many different Indian dialects that there are different names of the twenty-one Taras in the four different traditions [Sakya, Nyingma, Gelug or Kagyu].
Praises to the Twenty-One Taras is a traditional prayer in Tibetan Buddhism to the female Bodhisattva Tara also known as Ārya Tārā, or Jetsun Dolma. It appears in the Derge Kangyur as «Offering Praise to Tara through Twenty-One [verses] of Homage»
Each of the twenty-one emanations of Tara has her own name, and a specific mantra with which she is associated, offering protection from various types of fears, harm, and calamities.
The overview published here shows the names of the Nyingma tradition.