Noun:
* Anatomy: The muscular partition separating the thorax from the abdomen.
* Example: "The diaphragm contracts during inhalation."
* Photography: A device that controls the amount of light passing through the lens of a camera.
* Example: "She adjusted the diaphragm to achieve a shallow depth of field."
* Music: A thin, flexible membrane that vibrates to produce sound in some musical instruments.
* Example: "The diaphragm of the speaker vibrated with the music."
Adjective:
* Relating to the diaphragm (the anatomical structure).
* Example: "The diaphragmatic muscles are essential for breathing."
So, the part of speech for "diaphragm" depends on its context in the sentence.