PFC vs fluorocarbon

PFC and fluorocarbon both are nouns.

Word	Noun	Adjective	Verb	Adverb
PFC	Yes	No	No	No
fluorocarbon	Yes	No	No	No

As nouns, fluorocarbon is a hypernym of PFC; that is, fluorocarbon is a word with a broader meaning than PFC:

PFC: a powerful greenhouse gas emitted during the production of aluminum
fluorocarbon: a halocarbon in which some hydrogen atoms have been replaced by fluorine; used in refrigerators and aerosols

Other hypernyms of PFC include greenhouse emission, greenhouse gas.

PFC (noun)	fluorocarbon (noun)
a powerful greenhouse gas emitted during the production of aluminum	a halocarbon in which some hydrogen atoms have been replaced by fluorine; used in refrigerators and aerosols