tongue depressor vs depressor

tongue depressor and depressor both are nouns.

Word	Noun	Adjective	Verb	Adverb
tongue depressor	Yes	No	No	No
depressor	Yes	No	No	No

As nouns, depressor is a hypernym of tongue depressor; that is, depressor is a word with a broader meaning than tongue depressor:

tongue depressor: a thin depressor used to press the tongue down during an examination of the mouth and throat
depressor: a device used by physician to press a part down or aside

tongue depressor (noun)	depressor (noun)
a thin depressor used to press the tongue down during an examination of the mouth and throat	a device used by physician to press a part down or aside
	any skeletal muscle that draws a body part down
	any nerve whose activity tends to reduce the activity or tone of the body part it serves