Both Vanilla and TFMG add concrete, this is unacceptable.
There are a few solutions:

• Rename 1 of the concretes to something else
• Remove TFMG or Vanilla concrete (not ideal)
• Repurpose vanilla concrete as "the" concrete, but make it's variants and obtaining methods how it is in TFMG

It's seriously sloppy to have modded items with the same name and purpose as vanilla items