sobriety vs sincerity

sobriety and sincerity both are nouns.

Word	Noun	Adjective	Verb	Adverb
sobriety	Yes	No	No	No
sincerity	Yes	No	No	No

As nouns, sincerity is a hypernym of sobriety; that is, sincerity is a word with a broader meaning than sobriety:

Other hypernyms of sobriety include earnestness, serious-mindedness, seriousness.

sobriety (noun)	sincerity (noun)
abstaining from excess	the quality of being open and truthful; not deceitful or hypocritical
a manner that is serious and solemn	the trait of being serious
moderation in or abstinence from alcohol or other drugs	a quality of naturalness and simplicity
the state of being sober and not intoxicated by alcohol	an earnest and sincere feeling