250618
The Tsar , having personally befriended Gladky , suggested that his Host moves to the Kuban to join the other ex - Zaporozhian Cossacks , the Black Sea Cossack Host who were actively involved against the Circassians in the course of the Caucasus War .
 Host, Kuban, Cossacks, Black Sea Cossack Host
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Host, Kuban, Cossacks, Black Sea Cossack Host