Yes, Devi Kali and Devi Parvati are the same. Goddess Kali is believed to be the embodiment of creativity, feminine energy, and fertility. She is considered as Goddess Parvati’s incarnation, the consort of Lord Shiva. She came into being from the anger of Goddess Parvati and fiercely fought with the demons like Mahishasura. Her anger was so much that her wrath on the battlefield was unstoppable. She is represented in her ten-arms avatar with the weapon in each hand and riding a lion. It is believed that she was stopped from her carnage only after the intervention of Lord Shiva. He laid down in front of her, and when Goddess Kali stepped on him, she suddenly calmed down and retreated to her clear manifestation again.