inconvenience vs unsuitableness

inconvenience and unsuitableness both are nouns.

Word	Noun	Adjective	Verb	Adverb
inconvenience	Yes	No	Yes	No
unsuitableness	Yes	No	No	No

As nouns, unsuitableness is a hypernym of inconvenience; that is, unsuitableness is a word with a broader meaning than inconvenience:

inconvenience: the quality of not being useful or convenient
unsuitableness: the quality of having the wrong properties for a specific purpose

Other hypernyms of inconvenience include ineptness, unsuitability.

inconvenience (noun)	unsuitableness (noun)
the quality of not being useful or convenient	the quality of having the wrong properties for a specific purpose
a difficulty that causes anxiety
an inconvenient discomfort

inconvenience (verb)	unsuitableness (verb)
to cause inconvenience or discomfort to