retreat vs retire

retreat is a noun but retire is not a noun.

Word	Noun	Adjective	Verb	Adverb
retreat	Yes	No	Yes	No
retire	No	No	Yes	No

As verbs, retreat and retire are synonyms defined as:

Other synonyms of retreat include draw back, move back, pull away, pull back, recede, withdraw.

As verbs, retire is a hypernym of retreat; that is, retire is a word with a broader meaning than retreat:

Other hypernyms of retreat include draw back, move back, pull away, pull back, recede, retreat, withdraw.

retreat (noun)	retire (noun)
(military) withdrawal of troops to a more favorable position to escape the enemy's superior forces or after a defeat
withdrawal for prayer and study and meditation
the act of withdrawing or going backward (especially to escape something hazardous or unpleasant)
an area where you can be alone
(military) a bugle call signaling the lowering of the flag at sunset
(military) a signal to begin a withdrawal from a dangerous position
a place of privacy; a place affording peace and quiet

retreat (verb)	retire (verb)
make a retreat from an earlier commitment or activity	prepare for sleep
pull back or move away or backward	cause to get out
move back	cause to be out on a fielding play
move away, as for privacy	lose interest
	pull back or move away or backward
	dispose of (something no longer useful or needed)
	break from a meeting or gathering
	go into retirement; stop performing one's work or withdraw from one's position
	withdraw from active participation
	make (someone) retire
	withdraw from circulation or from the market, as of bills, shares, and bonds