What part of speech is Sensitive?

"Sensitive" can be multiple parts of speech depending on how it's used in a sentence:

* Adjective: Describing a noun, e.g., "He has a sensitive stomach."

* Noun: Referring to the state of being sensitive, e.g., "The doctor checked her sensitivity to the medication."

Let me know if you have a specific sentence in mind, and I can tell you which part of speech it is in that context.