strep throat vs streptococcal sore throat

strep throat and streptococcal sore throat both are nouns.

Word	Noun	Adjective	Verb	Adverb
strep throat	Yes	No	No	No
streptococcal sore throat	Yes	No	No	No

As nouns, strep throat and streptococcal sore throat are synonyms defined as:

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

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

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