Difference between seasonal & Non-seasonal ordering


I’ve been struggling with ARIMA for some time now and one things I couldn’t figure out as of yet is, what is difference between seasonal and non-seasonal ordering?Also, how do I figure out the values of these ordering?

I’ve tried ADF and KPSS test already and the result from these tests actually contradicted because both resulted in p-value less than 0.05.

Please help.


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