assure vs plight

assure is not a noun while plight is a noun.

Word	Noun	Adjective	Verb	Adverb
assure	No	No	Yes	No
plight	Yes	No	Yes	No

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

Other hyponyms of assure include pledge, swear off, contract, undertake, guarantee, undertake.

assure (noun)	plight (noun)
	a solemn pledge of fidelity
	a situation from which extrication is difficult especially an unpleasant or trying one

assure (verb)	plight (verb)
be careful or certain to do something; make certain of something	promise solemnly and formally
inform positively and with certainty and confidence	give to in marriage
assure somebody of the truth of something with the intention of giving the listener confidence
make a promise or commitment
make certain of