streptococcus tonsilitis vs strep throat

streptococcus tonsilitis and strep throat both are nouns.

Word	Noun	Adjective	Verb	Adverb
streptococcus tonsilitis	Yes	No	No	No
strep throat	Yes	No	No	No

As nouns, streptococcus tonsilitis and strep throat are synonyms defined as:

streptococcus tonsilitis and strep throat: an infection of the oral pharynx and tonsils by streptococcus

Other synonyms of streptococcus tonsilitis include septic sore throat, streptococcal sore throat, throat infection.

streptococcus tonsilitis (noun)	strep throat (noun)
an infection of the oral pharynx and tonsils by streptococcus	an infection of the oral pharynx and tonsils by streptococcus