Naprosyn vs naproxen

Naprosyn and naproxen both are nouns.

Word	Noun	Adjective	Verb	Adverb
Naprosyn	Yes	No	No	No
naproxen	Yes	No	No	No

As nouns, Naprosyn and naproxen are synonyms defined as:

Naprosyn and naproxen: a nonsteroidal anti-inflammatory drug (trade name Naprosyn) used in the treatment of arthritis and musculoskeletal inflammation and moderate pain

Naprosyn (noun)	naproxen (noun)
a nonsteroidal anti-inflammatory drug (trade name Naprosyn) used in the treatment of arthritis and musculoskeletal inflammation and moderate pain	a nonsteroidal anti-inflammatory drug (trade name Naprosyn) used in the treatment of arthritis and musculoskeletal inflammation and moderate pain