indisposition vs hesitancy

indisposition and hesitancy both are nouns.

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

As nouns, indisposition and hesitancy are synonyms defined as:

Other synonyms of indisposition include disinclination, hesitation, reluctance.

indisposition (noun)	hesitancy (noun)
a certain degree of unwillingness	a certain degree of unwillingness
a slight illness	a feeling of diffidence and indecision about doing something