assurance vs self-assurance

assurance and self-assurance both are nouns.

Word	Noun	Adjective	Verb	Adverb
assurance	Yes	No	No	No
self-assurance	Yes	No	No	No

As nouns, assurance and self-assurance are synonyms defined as:

assurance and self-assurance: freedom from doubt; belief in yourself and your abilities

Other synonyms of assurance include authority, confidence, self-confidence, sureness.

assurance (noun)	self-assurance (noun)
freedom from doubt; belief in yourself and your abilities	freedom from doubt; belief in yourself and your abilities
a statement intended to inspire confidence
a binding commitment to do or give or refrain from something
a British term for some kinds of insurance