intension vs signification

intension and signification both are nouns.

Word	Noun	Adjective	Verb	Adverb
intension	Yes	No	No	No
signification	Yes	No	No	No

As nouns, signification is a hypernym of intension; that is, signification is a word with a broader meaning than intension:

intension: what you must know in order to determine the reference of an expression
signification: the message that is intended or expressed or signified

Other hypernyms of intension include import, meaning, significance.

intension (noun)	signification (noun)
what you must know in order to determine the reference of an expression	the message that is intended or expressed or signified