perfidious vs punic

perfidious and punic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
perfidious	No	Yes	No	No
punic	No	Yes	No	No

As adjectives, perfidious and punic are synonyms defined as:

perfidious and punic: tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans

Other synonyms of perfidious include treacherous.

perfidious (adjective)	punic (adjective)
tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans	tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans