septic vs infected

septic and infected both are adjectives.

Word	Noun	Adjective	Verb	Adverb
septic	No	Yes	No	No
infected	No	Yes	No	No

As adjectives, septic and infected are synonyms defined as:

septic and infected: containing or resulting from disease-causing organisms

septic (adjective)	infected (adjective)
containing or resulting from disease-causing organisms	containing or resulting from disease-causing organisms
of or relating to or caused by putrefaction