infective vs infectious

infective and infectious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
infective	No	Yes	No	No
infectious	No	Yes	No	No

As adjectives, infective and infectious are synonyms defined as:

infective and infectious: caused by infection or capable of causing infection

infective (adjective)	infectious (adjective)
caused by infection or capable of causing infection	easily spread
able to cause disease	of or relating to infection
	caused by infection or capable of causing infection