able' is the adjective
'ably' is the adverb
'enable' is the verb (to make able) - usually we ad 'en' to the end of nouns to achieve this (EXAMPLE : strengthen, lighten, etc.)
Also, 'disable' (to remove ability)
No, it's a noun.
Able is an adjective, the corresponding noun is ability and the corresponding adverb is ably.
No, it is not an adverb. Truthful is an adjective, and the adverb form is "truthfully."
adverb is word that modified a verb,adjective.or other adverb
actually, there are 4 types of adverb.1. adverb of manner2. adverb of time3. adverb of place4. adverb of frequency