dedication vs assurance

dedication and assurance both are nouns.

Word	Noun	Adjective	Verb	Adverb
dedication	Yes	No	No	No
assurance	Yes	No	No	No

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

Other hyponyms of dedication include oath, swearing, affirmation, promise, pledge.

dedication (noun)	assurance (noun)
the act of binding yourself (intellectually or emotionally) to a course of action	freedom from doubt; belief in yourself and your abilities
complete and wholehearted fidelity	a statement intended to inspire confidence
a short message (as in a book or musical work or on a photograph) dedicating it to someone or something	a binding commitment to do or give or refrain from something
a message that makes a pledge	a British term for some kinds of insurance
a ceremony in which something (as a building) is dedicated to some goal or purpose