pirate vs piratical

pirate is a noun but piratical is not a noun.

Word	Noun	Adjective	Verb	Adverb
pirate	Yes	No	Yes	No
piratical	No	Yes	No	No

pirate (noun)	piratical (noun)
a ship that is manned by pirates
someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation
someone who uses another person's words or ideas as if they were his own

pirate (adjective)	piratical (adjective)
	characteristic of pirates
	characteristic of piracy

pirate (verb)	piratical (verb)
take arbitrarily or by force
copy illegally; of published material