slowness vs deliberation

slowness and deliberation both are nouns.

Word	Noun	Adjective	Verb	Adverb
slowness	Yes	No	No	No
deliberation	Yes	No	No	No

As nouns, slowness and deliberation are synonyms defined as:

slowness and deliberation: a rate demonstrating an absence of haste or hurry

Other synonyms of slowness include deliberateness, unhurriedness.

slowness (noun)	deliberation (noun)
a rate demonstrating an absence of haste or hurry	the trait of thoughtfulness in action or decision
lack of normal development of intellectual capacities	a rate demonstrating an absence of haste or hurry
unskillfulness resulting from a lack of training	planning something carefully and intentionally
	careful consideration
	(usually plural) discussion of all sides of a question