hesitation vs reluctance

hesitation and reluctance both are nouns.

Word	Noun	Adjective	Verb	Adverb
hesitation	Yes	No	No	No
reluctance	Yes	No	No	No

As nouns, hesitation and reluctance are synonyms defined as:

Other synonyms of hesitation include disinclination, hesitancy, indisposition.

hesitation (noun)	reluctance (noun)
the act of pausing uncertainly	a certain degree of unwillingness
a certain degree of unwillingness	(physics) opposition to magnetic flux (analogous to electric resistance)
indecision in speech or action