indisposition vs disinclination

indisposition and disinclination both are nouns.

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

As nouns, indisposition and disinclination are synonyms defined as:

Other synonyms of indisposition include hesitancy, hesitation, reluctance.

indisposition (noun)	disinclination (noun)
a certain degree of unwillingness	a certain degree of unwillingness
a slight illness	that toward which you are inclined to feel dislike