convenience vs suitableness

convenience and suitableness both are nouns.

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

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

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

Other hypernyms of convenience include suitability.

convenience (noun)	suitableness (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