reliability vs solidity

reliability and solidity both are nouns.

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

As nouns, solidity is a hyponym of reliability; that is, solidity is a word with a more specific, narrower meaning than reliability:

reliability: the quality of being dependable or reliable
solidity: the quality of being solid and reliable financially or factually or morally

Other hyponyms of reliability include solidness, infallibility, duplicability, reproducibility.

reliability (noun)	solidity (noun)
the quality of being dependable or reliable	the quality of being solid and reliable financially or factually or morally
	the consistency of a solid
	state of having the interior filled with matter