English to Russian Other General / Conversation / Greetings / Letters

В этой статье – http://www.ireallytrade.com/lessons/NOT17.html - есть такая фраза –
Corn is not always Corn. Мой вариант – "Кукуруза – это не всегда кукуруза" – не совсем мне нравится, хотя я могу ошибаться.

Для тех, кто не хочет читать всю статью (1.5 переводческих страницы), привожу отрывки, которые помогут понять смысл этой фразы –

Corn is not the same as Hogs. Hogs are not the same as Copper which differs from Canadian Dollars and Coffee.
Nor is Corn always Corn.
I realize, this sounds like gobbledygook, that Corn is not always Corn. But it isn't. There are real differences between markets that I want to discuss with you in this lesson.
It is more obvious that Corn is not the same as Hogs though Hogs consume Corn. So there is an interrelationship between these two markets, but nonetheless they trade differently.
So there are real, clear-cut differences between individual markets, a trader should pay attention to. Fortunately, because we have The Commitment of Traders Report we are able to see what this specialist in each market is doing with their own money.
But as I said Corn is not always Corn...
What I mean by that is a bull market in Corn in 1973 is not the same type of bull market we had in Corn in 1987.
The lesson is, that we may need different strategies even for the same market; that Corn is not always Corn, if you get what I mean.

Спасибо.