reluctance vs indisposition

reluctance and indisposition both are nouns.

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

As nouns, reluctance and indisposition are synonyms defined as:

Other synonyms of reluctance include disinclination, hesitancy, hesitation.

reluctance (noun)	indisposition (noun)
a certain degree of unwillingness	a certain degree of unwillingness
(physics) opposition to magnetic flux (analogous to electric resistance)	a slight illness