dependability vs reliability

dependability and reliability both are nouns.

Word	Noun	Adjective	Verb	Adverb
dependability	Yes	No	No	No
reliability	Yes	No	No	No

As nouns, dependability and reliability are synonyms defined as:

dependability and reliability: the quality of being dependable or reliable

Other synonyms of dependability include dependableness, reliableness.

dependability (noun)	reliability (noun)
the quality of being dependable or reliable	the quality of being dependable or reliable