able is a suffix on its own so there aren't any roots
reconize and able
Mistake
be able
able is the root in the word changeable
The root word of incapacitated is - capacity.Other words extending from this, such as capacitate, all derive from capacity.
-Able is the suffix in unbelievable. -Able means the ability of.
able
The root word habil means "able", from the same root.
comfortable affordable reliable manageable
Enjoy would be the root.
The root word of suffocate is "suffocat," and the suffix "-able" is added to create the word "suffocatable."
They can be both. Knowledgeable = able as a suffix I am able to speak. = able as a verb.