deliberation vs slowness

deliberation and slowness both are nouns.

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

As nouns, deliberation and slowness are synonyms defined as:

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

Other synonyms of deliberation include deliberateness, unhurriedness.

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