Here is the actual statement from Pfizer.
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Indication & Authorized Use
COMIRNATY® (COVID-19 Vaccine, mRNA) is an FDA-approved COVID-19 vaccine made by Pfizer for BioNTech.
It is approved as a 2-dose series for prevention of COVID-19 in individuals 16 years of age and older
It is also authorized under Emergency Use Authorization (EUA) to be administered for emergency use to:
prevent COVID-19 in individuals 12 through 15 years, and
provide a third dose to individuals 12 years of age and older who have been determined to have certain kinds of immunocompromise.
The Pfizer-BioNTech COVID-19 Vaccine has received EUA from FDA to:
prevent COVID-19 in individuals 12 years of age and older, and
provide a third dose to individuals 12 years of age and older who have been determined to have certain kinds of immunocompromise
The FDA-approved COMIRNATY® (COVID-19 Vaccine, mRNA) and the EUA-authorized Pfizer-BioNTech COVID-19 Vaccine have the same formulation and can be used interchangeably to provide the COVID-19 vaccination series. An individual may be offered either COMIRNATY® (COVID-19 Vaccine, mRNA) or the Pfizer-BioNTech COVID-19 Vaccine to prevent coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2.
It looks like they split the name for the sake of approval.