withdrawal vs recession

withdrawal and recession both are nouns.

Word	Noun	Adjective	Verb	Adverb
withdrawal	Yes	No	No	No
recession	Yes	No	No	No

As nouns, recession is a hyponym of withdrawal; that is, recession is a word with a more specific, narrower meaning than withdrawal:

withdrawal (noun)	recession (noun)
the act of withdrawing	the act of becoming more distant
formal separation from an alliance or federation	the act of ceding back
the termination of drug taking	the withdrawal of the clergy and choir from the chancel to the vestry at the end of a church service
the act of taking out money or other capital	a small concavity
a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation	the state of the economy declines; a widespread decline in the GDP and employment and trade lasting from six months to a year
the act of withdrawing blood, tumors, etc.
the act of ceasing to participate in an activity
a retraction of a previously held position
avoiding emotional involvement