virulent vs deadly

virulent and deadly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
virulent	No	Yes	No	No
deadly	No	Yes	No	Yes

As adjectives, virulent and deadly are synonyms defined as:

Other synonyms of virulent include venomous.

virulent (adjective)	deadly (adjective)
infectious; having the ability to cause disease	exceedingly harmful
extremely poisonous or injurious; producing venom	extremely poisonous or injurious; producing venom
harsh or corrosive in tone	involving loss of divine grace or spiritual death
	(of a disease) having a rapid course and violent effect
	causing or capable of causing death
	of an instrument of certain death

virulent (adverb)	deadly (adverb)
	(used as intensives) excessively
	as if dead