fidelity vs dedication

fidelity and dedication both are nouns.

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

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

Other hyponyms of fidelity include constancy, loyalty, trueness.

fidelity (noun)	dedication (noun)
the quality of being faithful	the act of binding yourself (intellectually or emotionally) to a course of action
accuracy with which an electronic system reproduces the sound or image of its input signal	complete and wholehearted fidelity
	a short message (as in a book or musical work or on a photograph) dedicating it to someone or something
	a message that makes a pledge
	a ceremony in which something (as a building) is dedicated to some goal or purpose