YOU SAID:
Words are words while cats are cats while dogs are dogs and humans are humans
INTO JAPANESE
言葉は言葉であり、猫は猫であり、犬は犬であり、人間は人間である
BACK INTO ENGLISH
Words are words, cats are cats, dogs are dogs, humans are human beings
INTO JAPANESE
言葉は単語、猫は猫、犬は犬、人間は人間です
it is unlikely that this phrase will ever reach equilibrium