indecisiveness vs indecision

indecisiveness and indecision both are nouns.

Word	Noun	Adjective	Verb	Adverb
indecisiveness	Yes	No	No	No
indecision	Yes	No	No	No

As nouns, indecisiveness and indecision are synonyms defined as:

indecisiveness and indecision: the trait of irresolution; a lack of firmness of character or purpose

As nouns, indecisiveness and indecision are synonyms defined as:

indecisiveness and indecision: doubt concerning two or more possible alternatives or courses of action

Other synonyms of indecisiveness include irresolution.

indecisiveness (noun)	indecision (noun)
the trait of irresolution; a lack of firmness of character or purpose	the trait of irresolution; a lack of firmness of character or purpose
doubt concerning two or more possible alternatives or courses of action	doubt concerning two or more possible alternatives or courses of action