connotation vs intension

connotation and intension both are nouns.

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

As nouns, connotation and intension are synonyms defined as:

connotation and intension: what you must know in order to determine the reference of an expression

connotation (noun)	intension (noun)
an idea that is implied or suggested	what you must know in order to determine the reference of an expression
what you must know in order to determine the reference of an expression