punic vs perfidious

punic and perfidious both are adjectives.

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

As adjectives, punic and perfidious are synonyms defined as:

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

Other synonyms of punic include treacherous.

punic (adjective)	perfidious (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