pharyngeal recess vs recession

pharyngeal recess and recession both are nouns.

Word	Noun	Adjective	Verb	Adverb
pharyngeal recess	Yes	No	No	No
recession	Yes	No	No	No

As nouns, recession is a hypernym of pharyngeal recess; that is, recession is a word with a broader meaning than pharyngeal recess:

Other hypernyms of pharyngeal recess include corner, niche, recess.

pharyngeal recess (noun)	recession (noun)
a small recess in the wall of the pharynx	the act of becoming more distant
	the act of ceding back
	the withdrawal of the clergy and choir from the chancel to the vestry at the end of a church service
	a small concavity
	the state of the economy declines; a widespread decline in the GDP and employment and trade lasting from six months to a year