flee vs defect

flee is not a noun while defect is a noun.

Word	Noun	Adjective	Verb	Adverb
flee	No	No	Yes	No
defect	Yes	No	Yes	No

As verbs, defect is a hyponym of flee; that is, defect is a word with a more specific, narrower meaning than flee:

flee: run away quickly
defect: desert (a cause, a country or an army), often in order to join the opposing cause, country, or army

flee (noun)	defect (noun)
	a mark or flaw that spoils the appearance of something (especially on a person's body)
	a failing or deficiency
	an imperfection in an object or machine
	an imperfection in a bodily system

flee (verb)	defect (verb)
run away quickly	desert (a cause, a country or an army), often in order to join the opposing cause, country, or army