Nebcin vs tobramycin

Nebcin and tobramycin both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nebcin	Yes	No	No	No
tobramycin	Yes	No	No	No

As nouns, Nebcin and tobramycin are synonyms defined as:

Nebcin and tobramycin: an antibiotic (trade name Nebcin) that is especially effective against Gram-negative bacteria

Nebcin (noun)	tobramycin (noun)
an antibiotic (trade name Nebcin) that is especially effective against Gram-negative bacteria	an antibiotic (trade name Nebcin) that is especially effective against Gram-negative bacteria