PVC vs premature ventricular contraction

PVC and premature ventricular contraction both are nouns.

Word	Noun	Adjective	Verb	Adverb
PVC	Yes	No	No	No
premature ventricular contraction	Yes	No	No	No

As nouns, PVC and premature ventricular contraction are synonyms defined as:

PVC and premature ventricular contraction: irregularity of cardiac rhythm; recurrent occurrences can be a precursor of ventricular fibrillation

PVC (noun)	premature ventricular contraction (noun)
irregularity of cardiac rhythm; recurrent occurrences can be a precursor of ventricular fibrillation	irregularity of cardiac rhythm; recurrent occurrences can be a precursor of ventricular fibrillation
a polymer of vinyl chloride used instead of rubber in electric cables