Difference Between Adrenal Cortex and Adrenal Glandular?

Hello,

I am looking to take a new supplement containing adrenal glandulars, however, some supplements list Adrenal cortex and adrenal glandular on their ingredients:
Can anyone provide a clear answer as to the differences you would find in adrenal glandular supplementation? Is porcine or bovine better? I was thinking of a Thorne - Adrenal Cortrex product.

Any supplement experts?

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