is a type of (narrower)
the quality of having the properties that are right for a specific purpose
"an important requirement is suitability for long trips"
is an attribute of
suited to your comfort or purpose or needs
"a convenient excuse for not going"
is an attribute of
not suited to your comfort, purpose or needs
"it is inconvenient not to have a telephone in the kitchen"; "the back hall is an inconvenient place for the telephone"