pidgin vs artificial language

pidgin and artificial language both are nouns.

Word	Noun	Adjective	Verb	Adverb
pidgin	Yes	No	No	No
artificial language	Yes	No	No	No

As nouns, artificial language is a hypernym of pidgin; that is, artificial language is a word with a broader meaning than pidgin:

pidgin: an artificial language used for trade between speakers of different languages
artificial language: a language that is deliberately created for a specific purpose

pidgin (noun)	artificial language (noun)
an artificial language used for trade between speakers of different languages	a language that is deliberately created for a specific purpose