logic vs extensional

logic is a noun but extensional is not a noun.

Word	Noun	Adjective	Verb	Adverb
logic	Yes	No	No	No
extensional	No	Yes	No	No

logic (noun)	extensional (noun)
the branch of philosophy that analyzes inference
a system of reasoning
reasoned and reasonable judgment
the principles that guide reasoning within a given field or situation
the system of operations performed by a computer that underlies the machine's representation of logical operations

logic (adjective)	extensional (adjective)
	defining a word by listing the class of entities to which the word correctly applies