sensitive vs cognisant

sensitive is a noun but cognisant is not a noun.

Word	Noun	Adjective	Verb	Adverb
sensitive	Yes	Yes	No	No
cognisant	No	Yes	No	No

sensitive (noun)	cognisant (noun)
someone who serves as an intermediary between the living and the dead

sensitive (adjective)	cognisant (adjective)
responsive to physical stimuli	(sometimes followed by `of') having or showing knowledge or understanding or realization or perception
being susceptible to the attitudes, feelings, or circumstances of others
able to feel or perceive
of or pertaining to classified information or matters affecting national security
hurting