strep throat vs septic sore throat

strep throat and septic sore throat both are nouns.

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

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

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

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

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