convenience vs suitability

convenience and suitability both are nouns.

Word	Noun	Adjective	Verb	Adverb
convenience	Yes	No	No	No
suitability	Yes	No	No	No

As nouns, suitability is a hypernym of convenience; that is, suitability is a word with a broader meaning than convenience:

convenience: the quality of being useful and convenient
suitability: the quality of having the properties that are right for a specific purpose

Other hypernyms of convenience include suitableness.

convenience (noun)	suitability (noun)
a device or control that is very useful for a particular job	the quality of having the properties that are right for a specific purpose
a toilet that is available to the public
the quality of being useful and convenient
the state of being suitable or opportune