hesitancy vs disinclination

hesitancy and disinclination both are nouns.

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

As nouns, hesitancy and disinclination are synonyms defined as:

Other synonyms of hesitancy include hesitation, indisposition, reluctance.

hesitancy (noun)	disinclination (noun)
a certain degree of unwillingness	a certain degree of unwillingness
a feeling of diffidence and indecision about doing something	that toward which you are inclined to feel dislike