pneumococcal vaccine vs Pneumovax

pneumococcal vaccine and Pneumovax both are nouns.

Word	Noun	Adjective	Verb	Adverb
pneumococcal vaccine	Yes	No	No	No
Pneumovax	Yes	No	No	No

As nouns, pneumococcal vaccine and Pneumovax are synonyms defined as:

pneumococcal vaccine and Pneumovax: vaccine (trade name Pneumovax) effective against the 23 most common strains of pneumococcus

pneumococcal vaccine (noun)	Pneumovax (noun)
vaccine (trade name Pneumovax) effective against the 23 most common strains of pneumococcus	vaccine (trade name Pneumovax) effective against the 23 most common strains of pneumococcus