The connotation of the word 'comrade' reflects the way members of the Communist Party address a fellow member of the group. It has a connotation of 'equality'.
Explanation:
Orwell's 'Animal Farm' is an allegory to the events that occurred in Russia in the beginning of the 20th century. The Russian Revolution brought the Communist Political Party to power and as it's known, they were in power until the 1990s. Orwell decided to write Animal Farm in 1944 as the Russian Government commanded by Joseph Stalin (Napoleon in the book) began to show its first flaws.